Cyrus IMAP Server mysasl_canon_user off-by-one buffer overflow
| cyrus-mysaslcanonuser-offbyone-bo (18333) |  High Risk |
Description:
Cyrus IMAP Server is vulnerable to an off-by-one buffer overflow in the mysasl_canon_user function. A remote attacker could exploit this vulnerability to overflow a buffer and execute arbitrary code on the system.
Platforms Affected:
- Canonical, Ubuntu 4.10
- Carnegie Mellon University, Cyrus IMAP Server 2.2.9 and prior
- Conectiva, Linux 10
- Conectiva, Linux 9.0
- Gentoo, Linux
- MandrakeSoft, Mandrake Linux 10.0
- MandrakeSoft, Mandrake Linux 10.1
- OpenPKG, OpenPKG 2.1
- OpenPKG, OpenPKG 2.2
- OpenPKG, OpenPKG CURRENT
Remedy:
Upgrade to the latest version of Cyrus IMAP (2.2.10 or 2.1.17 or later), available from the Cyrus Download Web page. See References.
For Ubuntu Linux:
Upgrade to the latest cyrus21-imapd package (2.1.16-6ubuntu0.2 or later), as listed in USN-37-1 December 02, 2004. See References.
For Mandrake Linux:
Upgrade to the latest Cyrus IMAP package, as listed below. Refer to MandrakeSoft Security Advisory MDKSA-2004:139 for more information. See References.
Mandrake Linux 10.1: 2.2.8-4.1.101mdk or later
Mandrake Linux 10.0: 2.1.16-5.3.100mdk or later
For Gentoo Linux:
Upgrade to the latest version of cyrus-imap (2.2.10 or later), as listed in Gentoo Security Advisory GLSA 200411-34. See References.
For OpenPKG:
Upgrade to the latest imapd package, as listed in OpenPKG Security Advisory OpenPKG-SA-2004.051. See References.
OpenPKG CURRENT: 2.10-20041124 or later
OpenPKG 2.2: 2.2.8-2.2.1or later
OpenPKG 2.1: 2.2.6-2.1.1or later
For Conectiva Linux:
Upgrade to latest version of cyrus-imapd, as listed below. Refer to Conectiva Linux Announcement CLSA-2004:904 for more information. See References.
Conectiva Linux 9: 2.1.17-28805U90_5cl or later
Conectiva Linux 10: 2.2.10-62338U10_2cl or later
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Gain Access
References:
- CIAC INFORMATION BULLETIN P-156, Apple Security Update 2005-003 at http://www.ciac.org/ciac/bulletins/p-156.shtml.
- Conectiva Linux Announcement CLSA-2004:904, Multiple vulnerabilities in cyrus-imapd at http://distro.conectiva.com/atualizacoes/index.php?id=a&anuncio=000904.
- Cyrus Download Web page, Download Cyrus Software at http://asg.web.cmu.edu/cyrus/download/.
- BID-11738: Cyrus IMAPD Multiple Remote Unspecified Vulnerabilities
- CVE-2004-1067: Off-by-one error in the mysasl_canon_user function in Cyrus IMAP Server 2.2.9 and earlier leads to a buffer overflow, which may allow remote attackers to execute arbitrary code via the username.
- USN-37-1: cyrus21-imapd vulnerability
Reported:
Dec 02, 2004
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