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Files from Chris Evans

Email addressscarybeasts at gmail.com
First Active2000-05-17
Last Active2011-03-14
Foxit PDF Reader 4.2 Javascript File Write
Posted Mar 14, 2011
Authored by Chris Evans, bannedit | Site metasploit.com

This Metasploit module exploits an unsafe Javascript API implemented in Foxit PDF Reader version 4.2. The createDataObject() Javascript API function allows for writing arbitrary files to the file system. This issue was fixed in version 4.3.1.0218. Note: This exploit uses the All Users directory currently, which required administrator privileges to write to. This means an administrative user has to open the file to be successful. Kind of lame but thats how it goes sometimes in the world of file write bugs.

tags | exploit, arbitrary, javascript
advisories | OSVDB-71104
MD5 | 0a5eec385cb35fcdc29d85f762cafb84
glibc alloca() Memory Corruption
Posted Feb 25, 2011
Authored by Chris Evans | Site scarybeastsecurity.blogspot.com

Interesting blog entry that discusses how a glibc alloca()-based memory corruption vulnerability allowed for code execution.

tags | paper, code execution
MD5 | e56c4d56e87ef64c4b60687bca94b955
Internet Explorer Cross-Origin Leak
Posted Oct 22, 2010
Authored by Chris Evans

Microsoft Internet Explorer suffers from a cross-origin leak vulnerability.

tags | advisory
MD5 | 14d1c372a570dedccc3158153e8fac77
Microsoft Internet Explorer 8 Forced Tweeting
Posted Sep 3, 2010
Authored by Chris Evans

Microsoft Internet Explorer 8 suffers from a vulnerability that allows an arbitrary web site the ability to force a victim to make tweets.

tags | advisory, web, arbitrary
MD5 | 51e26942b1d61bf8696ece2a57b00b66
Open Source CERT Security Advisory 2009.10
Posted Jul 14, 2009
Authored by Chris Evans, Damien Miller, Open Source CERT

The mimeTeX and mathTeX CGIs suffer from several buffer overflows as well as command injection which result in remote code execution. Unfortunately mimeTeX and mathTex are provided without version numbers by the maintainer, who releases version-less zip archives. It is therefore impossible to provide affected version numbers.

tags | advisory, remote, overflow, cgi, code execution
advisories | CVE-2009-1382, CVE-2009-1383
MD5 | c7054415cf4b97f427efeec7cef352ed
Apple Safari XXE Local File Theft
Posted Jun 9, 2009
Authored by Chris Evans

Apple Safari versions prior to 4 may permit an evil web page to steal files from the local system by mounting an XXE attack against the parsing of the XSL XML.

tags | exploit, web, local
systems | apple
MD5 | 0c66cbfa46563336f3729fe78925cd1d
Chris Evans Security Advisory 2009.3
Posted Mar 20, 2009
Authored by Chris Evans

LittleCMS versions prior to 1.18beta2 suffers from various integer and buffer overflows as well as memory leak errors.

tags | advisory, overflow, memory leak
MD5 | bb38dbc806d63d06a94a21d1530a58fc
Chris Evans Security Advisory 2009.1
Posted Jan 24, 2009
Authored by Chris Evans

There is a trick which may permit the bypassing of policies in technologies which do syscall filtering on the Linux x86_64 kernel. The trick is made possible by the fact that the 32-bit and 64-bit kernel tables are different, combined with the fact that a 64-bit process can make a 32-bit syscall and visa versa. The syscall "number" check can get confused and permit a syscall it did not intend to.

tags | advisory, kernel
systems | linux
MD5 | 9bb2e29345e0e8c679ca3e5aadf00d06
Chris Evans Security Advisory 2008.9
Posted Nov 19, 2008
Authored by Chris Evans

Firefox versions 2.0.0.18 and below and WebKit nightly are affected by a cross-domain arbitrary image theft vulnerability.

tags | advisory, arbitrary
advisories | CVE-2008-5012
MD5 | a5218b3dbe84d9457e5d725d2e5b90c9
libexslt-overflow.txt
Posted Jul 31, 2008
Authored by Chris Evans

The libexslt library bundled with libxslt is affected by a heap-based buffer overflow which can lead to arbitrary code execution. The vulnerability is present in the rc4 encryption/decryption functions. Versions 1.1.8 and above and 1.1.24 and below are affected.

tags | advisory, overflow, arbitrary, code execution
advisories | CVE-2008-2935
MD5 | ea8f4cce63201c78ac95cd6868a0d632
jdk-overflow.txt
Posted Mar 12, 2008
Authored by Chris Evans

A couple more JPEG ICC parsing bugs were fixed in the latest JDK updates. Link to a malicious JPEG included.

tags | advisory, overflow
MD5 | 6ebec7c73d336738ee4a30a00c038842
ghostscript-overflow.txt
Posted Mar 3, 2008
Authored by Chris Evans

Ghostscript versions 8.61 and below suffer from a stack-based buffer overflow in the zseticcspace() function in zicc.c.

tags | advisory, overflow
MD5 | e8908af1dfabf34c4b2eab9ea0ace408
MDKSA-2004:113.txt
Posted Oct 27, 2004
Authored by Chris Evans | Site mandrakesoft.com

Mandrake Linux Security Update Advisory - Multiple integer overflow issues affecting xpdf-2.0 and xpdf-3.0. Also programs like cups which have embedded versions of xpdf. These can result in writing an arbitrary byte to an attacker controlled location which probably could lead to arbitrary code execution.

tags | advisory, overflow, arbitrary, code execution
systems | linux, mandrake
advisories | CVE-2004-0888, CVE-2004-0889
MD5 | dbbeceb18f4a83c657d4ce2e53f6f3b8
Chris Evans Security Advisory 2004.5
Posted Sep 17, 2004
Authored by Chris Evans

gtk+ version 2.4.4 has heap and stack-based overflows that can allow for the compromise of an account used to browse a malicious XPM file.

tags | advisory, overflow
advisories | CVE-2004-0782, CVE-2004-0783
MD5 | 85691971eba050ddab22aac301a8a167
Chris Evans Security Advisory 2004.3
Posted Sep 17, 2004
Authored by Chris Evans

libXpm versions below 6.8.1 suffer from multiple stack and integer overflows.

tags | advisory, overflow
advisories | CVE-2004-0782, CVE-2004-0783
MD5 | aab6715e16b3b1a7e49bc762fd4978de
Chris Evans Security Advisory 2004.4
Posted Aug 20, 2004
Authored by Chris Evans | Site scary.beasts.org

qt version 3.3.2 has a heap overflow in its BMP parser.

tags | advisory, overflow
advisories | CVE-2004-0691
MD5 | 51d0163515f11d4578a9278f3d4ba12d
Chris Evans Security Advisory 2004.1
Posted Aug 5, 2004
Authored by Chris Evans

libpng version 1.2.5 is susceptible to stack-based buffer overflows and various other code concerns.

tags | advisory, overflow
advisories | CVE-2004-0597, CVE-2004-0598, CVE-2004-0599
MD5 | 127f70ce6d41af038f6c102662444fe0
DoS.knfsd
Posted May 17, 2000
Authored by Chris Evans

A DoS condition exists in the Linux kernel knfsd server. Remote, unauthenticated users (i.e. those with neither a directory mounted nor permission to mount one) can OOPS the host kernel. The OOPS does not bring down the target host, but it is possible to render the NFS service inoperable until a reboot.

tags | remote, denial of service, kernel
systems | linux
MD5 | 44a8e293d5fe62f2d80a2512396da07c
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