mirror of https://github.com/nealey/eris.git
Fix directory traversal bug
This commit is contained in:
Neale Pickett
parent
25600693cc
commit
90660eae48
221
CHANGES
221
CHANGES
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@ -1,136 +1,139 @@
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4.0:
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Fix directory traversal vulnerability (fuzzie)
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3.1:
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Add -. flag to disable vhosting
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Support server push CGI
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Handle busybox tcpsvd
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Changed formatting of directory indexing
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Handle read timeout
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Fix if-modified-since bug with keepalive connections
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Change to CGI's directory on exec
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Add -. flag to disable vhosting
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Support server push CGI
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Handle busybox tcpsvd
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Changed formatting of directory indexing
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Handle read timeout
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Fix if-modified-since bug with keepalive connections
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Change to CGI's directory on exec
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3.0:
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More or less a ground-up rewrite. A few fnord parts remain
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here and there.
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More or less a ground-up rewrite. A few fnord parts remain
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here and there.
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2.0:
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Replace poll with select, which is more portable and may be
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slightly faster; however, it's only called for CGI and by
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that point you've lost quite a bit in terms of speed
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Remove Accept header parsing: it was broken and the result was
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that the Accept header had no effect
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Remove the .gz trick: I never used it, but I would not be averse
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to adding it back if people liked it
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Rename to "eris httpd" to acknowledge fork
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Add regression test suite
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Replace compile-time options with command-line ones
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Fix segfault with directory listing of /
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Replace buffer_1 and buffer_2 with stdio
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Replace libowfat with libc
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Add all patches from (defunct) Debian package
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Fix if-modified-since date parsing
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Make text content-types use charset=UTF-8
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Change default content-type to application/octet-stream
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Makefile no longer overrides CC and CPP from parent makes
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Don't send Content-type if there's no content
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New maintainer: Neale Pickett <neale@woozle.org>
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Replace poll with select, which is more portable and may be
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slightly faster; however, it's only called for CGI and by
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that point you've lost quite a bit in terms of speed
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Remove Accept header parsing: it was broken and the result was
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that the Accept header had no effect
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Remove the .gz trick: I never used it, but I would not be averse
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to adding it back if people liked it
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Rename to "eris httpd" to acknowledge fork
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Add regression test suite
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Replace compile-time options with command-line ones
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Fix segfault with directory listing of /
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Replace buffer_1 and buffer_2 with stdio
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Replace libowfat with libc
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Add all patches from (defunct) Debian package
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Fix if-modified-since date parsing
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Make text content-types use charset=UTF-8
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Change default content-type to application/octet-stream
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Makefile no longer overrides CC and CPP from parent makes
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Don't send Content-type if there's no content
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New maintainer: Neale Pickett <neale@woozle.org>
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1.10:
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have fallback in case sendfile fails
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have fallback in case sendfile fails
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1.9:
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chdir to cgi's base dir (Kuba Winnicki)
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set HTTP_ACCEPT_ENCODING environment variable (Kuba Winnicki)
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We actually should export all HTTP headers as HTTP_[header]
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Any takers?
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Try not to send error message HTTP headers if we already sent the
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headers from the CGI (Kuba Winnicki)
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<ims -> <=ims (Gerrit Pape)
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64-bit file I/O cleanliness
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fix HTTP ranges (Joachim Berdal Haga via Gerrit Pape)
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chdir to cgi's base dir (Kuba Winnicki)
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set HTTP_ACCEPT_ENCODING environment variable (Kuba Winnicki)
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We actually should export all HTTP headers as HTTP_[header]
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Any takers?
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Try not to send error message HTTP headers if we already sent the
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headers from the CGI (Kuba Winnicki)
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<ims -> <=ims (Gerrit Pape)
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64-bit file I/O cleanliness
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fix HTTP ranges (Joachim Berdal Haga via Gerrit Pape)
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1.8:
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keep current environment in CGI (Laurent Bercot)
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make fnord-conf use the UID and not the user name (Fridtjof Busse)
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fix typo in buffer_putulonglong (Gerrit Pape)
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fix CGI POST off-by-two typo (Mark Hopf)
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fix gif->png conversion (Thomas Seck)
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remove == bashism from fnord-conf (Thomas Seck)
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add bittorrent mime type
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make authorization data available to CGIs for GET, too (Paul Jarc)
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fix conversion of host name to lower case (Gerrit Pape)
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add small test cgi: cgi-post.c
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fix CGI POST bug (Moe Wibble)
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fix CGI PATH_TRANSLATED bug (Nicolas George)
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add optional authentication support (Nicolas George, see README.auth)
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make sure error messages are text/html
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move /. -> /: conversion before demangling so it can actually be
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used as security measure for installations that don't use chroot
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keep current environment in CGI (Laurent Bercot)
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make fnord-conf use the UID and not the user name (Fridtjof Busse)
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fix typo in buffer_putulonglong (Gerrit Pape)
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fix CGI POST off-by-two typo (Mark Hopf)
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fix gif->png conversion (Thomas Seck)
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remove == bashism from fnord-conf (Thomas Seck)
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add bittorrent mime type
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make authorization data available to CGIs for GET, too (Paul Jarc)
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fix conversion of host name to lower case (Gerrit Pape)
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add small test cgi: cgi-post.c
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fix CGI POST bug (Moe Wibble)
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fix CGI PATH_TRANSLATED bug (Nicolas George)
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add optional authentication support (Nicolas George, see README.auth)
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make sure error messages are text/html
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move /. -> /: conversion before demangling so it can actually be
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used as security measure for installations that don't use chroot
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1.7:
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add .mov and .qt for quicktime, .mpg for video/mpeg and .wav for audio/x-wav
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add mmap based file serving (should do zero-copy tcp just like sendfile)
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add Pragma: no-cache to CGI responses
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fix (apparently not exploitable) buffer overrun in do_cgi
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This bug was found by Ralf Wildenhues. To my knowledge it is
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impossible to exploit this bug on any platform known to me.
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fix (harmless) access to uninitialized data
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add .mov and .qt for quicktime, .mpg for video/mpeg and .wav for audio/x-wav
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add mmap based file serving (should do zero-copy tcp just like sendfile)
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add Pragma: no-cache to CGI responses
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fix (apparently not exploitable) buffer overrun in do_cgi
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This bug was found by Ralf Wildenhues. To my knowledge it is
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impossible to exploit this bug on any platform known to me.
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fix (harmless) access to uninitialized data
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1.6:
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add support for $PATH_INFO in CGI environment.
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add .pac for netscape proxy autoconfig
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add .sig for application/pgp-signature
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add support for $PATH_INFO in CGI environment.
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add .pac for netscape proxy autoconfig
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add .sig for application/pgp-signature
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1.5:
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fix write timeout handling (found by Lukas Beeler)
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fix fnord-conf to use the symbolic account name in run script
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(Sebastian D.B. Krause)
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fix write timeout handling (found by Lukas Beeler)
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fix fnord-conf to use the symbolic account name in run script
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(Sebastian D.B. Krause)
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1.4:
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add dangling symlink based whole-host redirection (see README). This
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has the advantage that it can serve normal sites and redirect sites
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on the same IP.
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add support for non-TCP UCSPI environments (like ucspi-ssl). Please
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get the latest version of my ucspi-tcp IPv6 patch as I violated the
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UCSPI spec with all versions before 0.88-diff11.
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change logging from "127.0.0.1 200 23 Links_(0.96;_Unix) none /index.html"
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to "127.0.0.1 200 23 localhost Links_(0.96;_Unix) none /index.html"
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(i.e. include the Host: header). Suggested by Thomas Bader.
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add "immediate mode". If you give fnord a command line argument, it
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will change to that directory and if no "default" directory is
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given, it will assume there are no virtual hosts and serve from the
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current directory. I have a shell script called "http" that does
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tcpserver -RHl localhost 0 8000 /home/leitner/bin/fnord-idx .
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to share some directory on my hard drive with some poor Windows
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users without npoll (http://www.fefe.de/ncp/). fnord-idx is a new
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target (a fnord with DIR_LIST) that is auto-built by make.
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add dangling symlink based whole-host redirection (see README). This
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has the advantage that it can serve normal sites and redirect sites
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on the same IP.
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add support for non-TCP UCSPI environments (like ucspi-ssl). Please
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get the latest version of my ucspi-tcp IPv6 patch as I violated the
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UCSPI spec with all versions before 0.88-diff11.
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change logging from "127.0.0.1 200 23 Links_(0.96;_Unix) none /index.html"
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to "127.0.0.1 200 23 localhost Links_(0.96;_Unix) none /index.html"
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(i.e. include the Host: header). Suggested by Thomas Bader.
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add "immediate mode". If you give fnord a command line argument, it
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will change to that directory and if no "default" directory is
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given, it will assume there are no virtual hosts and serve from the
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current directory. I have a shell script called "http" that does
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tcpserver -RHl localhost 0 8000 /home/leitner/bin/fnord-idx .
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to share some directory on my hard drive with some poor Windows
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users without npoll (http://www.fefe.de/ncp/). fnord-idx is a new
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target (a fnord with DIR_LIST) that is auto-built by make.
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1.3:
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make directory listings use non-proportional fonts (thanks, Antonio Dias)
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fnord will now optionally (default: enabled) normalize the incoming
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host name, i.e. "www.domain.com" -> "www.domain.com:80". That
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should cut down on the number of symbolic links. ;)
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remove timeout error message. fnord will not drop the connection
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without error message. Mozilla used to display the error message
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when the user caused another request on the connection with the
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timeout.
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Uwe Ohse found two more compilation problems.
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make directory listings use non-proportional fonts (thanks, Antonio Dias)
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fnord will now optionally (default: enabled) normalize the incoming
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host name, i.e. "www.domain.com" -> "www.domain.com:80". That
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should cut down on the number of symbolic links. ;)
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remove timeout error message. fnord will not drop the connection
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without error message. Mozilla used to display the error message
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when the user caused another request on the connection with the
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timeout.
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Uwe Ohse found two more compilation problems.
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1.2:
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Olaf: I changed my initial CGI-interface to NOT use the filesystem but
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two pipes.
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Add whole-host redirect (see README)
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Olaf: added direcory-lists and "index.cgi" support (normal CGI only !
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"nph-index.cgi" is not supported). Fixed some problematic parts in the
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CGI-interface (\n -> \r\n converter for http-header and CGI crash
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handling)
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Fix gzip encoding bug that only happened with keep-alive
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Olaf: I changed my initial CGI-interface to NOT use the filesystem but
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two pipes.
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Add whole-host redirect (see README)
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Olaf: added direcory-lists and "index.cgi" support (normal CGI only !
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"nph-index.cgi" is not supported). Fixed some problematic parts in the
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CGI-interface (\n -> \r\n converter for http-header and CGI crash
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handling)
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Fix gzip encoding bug that only happened with keep-alive
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1.1:
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ship with the parts from libowfat that we actually use
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minor speed-up. sendfile is a drag for very small files, so those are
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now sent through the same buffer the header is sent through. That
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sends the whole answer in one TCP packet if you are lucky, even
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without the TCP_CORK magic from Linux. Major speed-up for
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benchmarks ;)
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ship with the parts from libowfat that we actually use
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minor speed-up. sendfile is a drag for very small files, so those are
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now sent through the same buffer the header is sent through. That
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sends the whole answer in one TCP packet if you are lucky, even
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without the TCP_CORK magic from Linux. Major speed-up for
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benchmarks ;)
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1.0:
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initial release
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initial release
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6
test.sh
6
test.sh
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@ -150,6 +150,12 @@ title "Too many headers"
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done
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printf '\r\n') | $HTTPD 2>/dev/null | grep -q 'HTTP/1.. 431 ' && pass || fail
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title "Directory traversal"
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printf 'GET /../default/index.html HTTP/1.0\r\n\r\n' | $HTTPD 2>/dev/null | grep -q 'HTTP/1.. 404' && pass || fail
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title "Escaped directory traversal"
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printf 'GET /%%2e%%2e/default/index.html HTTP/1.0\r\n\r\n' | $HTTPD 2>/dev/null | grep -q 'HTTP/1.. 404' && pass || fail
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H "If-Modified-Since"
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