Title: Cyrus-SASL Syslog Format String Vulnerability
Severity: CRITICAL
Description:
Cyrus-SASL is an open-source implementation of SASL, the "Simple Authentication and Security Layer".
Cyrus SASL contains a format string vulnerability in it's internal logging function. Data that may be externally supplied is passed to syslog() as the format string argument.
By using format specifiers such as '%n', attackers may be able to cause arbitrary locations in memory to be overwritten with almost any value. It may be possible to replace or corrupt critical values such as function pointers or return addresses.
To exploit this, an attacker must insert the malicious format specifiers into a log message. This may be possible for remote, unauthenticated attackers via logging of values such as username, hostname, etc.
This vulnerability may allow for an unauthenticated remote attacker to gain root privileges on the target host.
Affected Products:
- Caldera OpenLinux Server 3.1.0
- Caldera OpenLinux Workstation 3.1.0
- Carnegie Mellon University Cyrus-SASL 1.5.24
- Carnegie Mellon University Cyrus-SASL 1.5.25
- Carnegie Mellon University Cyrus-SASL 1.5.26
- Conectiva Linux 6.0.0
- Conectiva Linux 7.0.0
- MandrakeSoft Linux Mandrake 8.0.0
- MandrakeSoft Linux Mandrake 8.0.0 ppc
- MandrakeSoft Linux Mandrake 8.1.0
- MandrakeSoft Linux Mandrake 8.1.0 ia64
- RedHat Linux 7.0.0
- RedHat Linux 7.1.0
- RedHat Linux 7.2.0
- S.u.S.E. Linux 7.0.0
- S.u.S.E. Linux 7.0.0 alpha
- S.u.S.E. Linux 7.0.0 i386
- S.u.S.E. Linux 7.0.0 ppc
- S.u.S.E. Linux 7.0.0 sparc
- S.u.S.E. Linux 7.1.0
- S.u.S.E. Linux 7.1.0 alpha
- S.u.S.E. Linux 7.1.0 ppc
- S.u.S.E. Linux 7.1.0 sparc
- S.u.S.E. Linux 7.1.0 x86
- S.u.S.E. Linux 7.2.0
- S.u.S.E. Linux 7.2.0 i386
- S.u.S.E. Linux 7.3.0
- S.u.S.E. Linux 7.3.0 i386
- S.u.S.E. Linux 7.3.0 ppc
- S.u.S.E. Linux 7.3.0 sparc
References:
- Carnegie Mellon University: Cyrus Project Homepage
- Mandrake: MDKSA-2002:018 cyrus-sasl
- Red Hat: RHSA-2001:150-06 Updated Cyrus SASL packages available
- Red Hat: RHSA-2001:151-06 Updated Cyrus SASL packages available
- SuSE: SuSE-SA:2001:042 cyrus-sasl
Juniper Networks provides this content via a wide variety of sources and production methods. If notified of errors or omissions in the content of this page, Juniper Networks, at its discretion, will modify or remove the page or leave the content as is, depending on various factors including but not limited to the reputation and authority of the party providing the notification. Please use the contact information displayed elsewhere on this page to report any errors or omissions regarding the content on this page.
