Cyrus-SASL library log writer buffer overflow
| cyrus-sasl-logwriter-bo (10812) |  High Risk |
Description:
Carnegie Mellon University's Cyrus-SASL library is vulnerable to a buffer overflow in the log writer. The Cyrus-SASL library fails to properly handle trailing null bytes in a log message. By causing the Cyrus-SASL log writer to write data to the log containing a trailing null byte \0, a local attacker could overflow a buffer and execute code on the system.
Consequences:
Gain Privileges
Remedy:
Upgrade to the latest version of Cyrus-SASL (2.1.10 or later), available from the Carnegie Mellon University's FTP site. See References.
For Gentoo Linux:
Upgrade versions dev-libs/cyrus-sasl-2.1.9 and earlier, as listed in Gentoo Linux Security Announcement 200212-27. See References.
For Red Hat Linux:
Upgrade to the latest cyrus-sasl package, as listed below. Refer to RHSA-2002:283-09 for more information. See References.
Red Hat 8.0: cyrus-sasl-2.1.10-1 or later
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- BugTraq Mailing List, Mon Dec 09 2002 - 13:25:08 CST : Cyrus SASL library buffer overflows .
- Carnegie Mellon University's FTP site: /pub/cyrus-mail/.
- CIAC INFORMATION BULLETIN P-156: Apple Security Update 2005-003.
- Gentoo Linux Security Announcement 200212-10: cyrus-sasl -- buffer overflows.
- BID-6347: Cyrus SASL Library Username Heap Corruption Vulnerability
- BID-6348: Cyrus SASL Library LDAP Heap Corruption Vulnerability
- BID-6349: Cyrus SASL Library Logging Memory Corruption Vulnerability
- CVE-2002-1347: Multiple buffer overflows in Cyrus SASL library 2.1.9 and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary code via (1) long inputs during user name canonicalization, (2) characters that need to be escaped during LDAP authentication using saslauthd, or (3) an off-by-one error in the log writer, which does not allocate space for the null character that terminates a string.
- RHSA-2002-283: Updated cyrus-sasl packages fix buffer overflows
- SUSE-SA:2002:048: cyrus-imapd: remote command execution
Platforms Affected:
- Carnegie Mellon University Cyrus-SASL 2.1.9
- Gentoo Linux
- Novell SuSE Linux Enterprise Server 7.0
- RedHat Linux 8.0
- SuSE Linux Enterprise Server 8
- SuSE SuSE eMail Server III
- SUSE SuSE Linux 7.1
- SUSE SuSE Linux 7.2
- SUSE SuSE Linux 7.3
- SUSE SuSE Linux 8.0
- SUSE SuSE Linux 8.1
- SuSE SuSE Linux Connectivity Server
- SuSE SuSE Linux Office Server
- SuSE SuSE Linux OpenExchange Server 4
Reported:
Dec 09, 2002
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