Gaim MIME decoder buffer overflow
| gaim-mime-decoder-bo (14942) |  High Risk |
Description:
Gaim is vulnerable to a buffer overflow in the MIME decoder. When decoding a quoted printable string for email notification, it is possible for a remote attacker to supply a backslash (in the form of \) to the sscanf function in the gaim_quotedp_decode function to overflow a buffer and execute arbitrary code on the system.
Platforms Affected:
- Conectiva, Linux 8.0
- Conectiva, Linux 9.0
- Debian, Debian Linux 3.0
- Gaim Project, Gaim 0.75
- Gentoo, Linux
- Slackware, Slackware Linux 9.0
- Slackware, Slackware Linux 9.1
- Slackware, Slackware Linux current
- SuSE, SuSE Linux 8.0
- SuSE, SuSE Linux 8.1
- SuSE, SuSE Linux 8.2
- SuSE, SuSE Linux 9.0
Remedy:
Download and install the latest version of Gaim after version 0.75, as listed on the Sourceforge Gaim Web Site. See References.
For Slackware Linux:
Upgrade to the latest gaim package, as listed below. Refer to slackware-security Mailing List, Mon, 26 Jan 2004 16:14:45 -0800 (PST) for more information. See References.
Slackware Linux 9.0: 0.75-i386-1 or later
Slackware Linux 9.1 and current: 0.75-i486-1 or later
For Gentoo Linux:
Upgrade to the latest version of gaim (0.75-r7 or later), as listed in Gentoo Linux Security Announcement 200401-04. See References.
For SuSE Linux:
Upgrade to the latest gaim package, as listed below. Refer to SuSE Security Announcement SuSE-SA:2004:004 for more information. See References.
SuSE Linux 9.0 (Intel): 0.67-65 or later
SuSE Linux 8.2: 0.59.8-60 or later
SuSE Linux 8.1: 0.59-158 or later
SuSE Linux 8.0: 0.50-187 or later
For Debian GNU/Linux 3.0 (woody):
Upgrade to the latest gaim package, as listed below. Refer to DSA-434-1 for more information. See References.
Debian GNU/Linux 3.0 (woody): 0.58-2.4 or later
For Conectiva Linux:
Upgrade to the latest gaim package, as listed below. Refer to Conectiva Linux Security Announcement CLSA-2004:813 for more information. See References.
Conectiva Linux 8: 0.59.8-1U80_1cl or later
Conectiva Linux 9: 0.75-27683U90_1cl or later
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Gain Access
References:
- Conectiva Linux Security Announcement CLSA-2004:813, gaim at http://distro.conectiva.com/atualizacoes/index.php?id=a&anuncio=000813.
- Full-Disclosure Mailing List, Mon Jan 26 2004 - 02:44:42 CST, Advisory 01/2004: 12 x Gaim remote overflows at http://archives.neohapsis.com/archives/fulldisclosure/2004-01/0994.html.
- Gentoo Linux Security Announcement 200401-04, GAIM 0.75 Remote overflows at http://www.linuxsecurity.com/content/view/105690/104/. (From LinuxSecurity archive.)
- slackware-security Mailing List, Mon, 26 Jan 2004 16:14:45 -0800 (PST), GAIM security update (SSA:2004-026-01) at http://www.slackware.org/security/viewer.php?l=slackware-security&y=2004&m=slackware-security.361158.
- Sourceforge Gaim Web site, Downloads at http://gaim.sourceforge.net/downloads.php.
- CVE-2004-0005: Multiple buffer overflows in Gaim 0.75 allow remote attackers to cause a denial of service and possibly execute arbitrary code via (1) octal encoding in yahoo_decode that causes a null byte to be written beyond the buffer, (2) octal encoding in yahoo_decode that causes a pointer to reference memory beyond the terminating null byte, (3) a quoted printable string to the gaim_quotedp_decode MIME decoder that causes a null byte to be written beyond the buffer, and (4) quoted printable encoding in gaim_quotedp_decode that causes a pointer to reference memory beyond the terminating null byte.
- DSA-434: gaim -- several vulnerabilities
- OSVDB ID: 3736: Gaim Quoted Printable Decoder Overflows
- SECTRACK ID: 1008850: Gaim Contains Multiple Overflows That Let a Remote User Execute Arbitrary Code
- US-CERT VU#190366: Gaim contains a buffer overflow vulnerability in the gaim_quotedp_decode() function
- US-CERT VU#226974: Gaim contains an off-by-one buffer overflow vulnerability in the gaim_quotedp_decode() function
- US-CERT VU#404470: Gaim contains an off-by-one buffer overflow vulnerability in the yahoo_decode() function
- US-CERT VU#655974: Gaim contains a buffer overflow vulnerability in the yahoo_decode() function
Reported:
Jan 26, 2004
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