Syslog-ng: Denial of Service

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200712-19 / syslog-ng
Release Date	December 29, 2007
Latest Revision	December 29, 2007: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-admin/syslog-ng	< 2.0.6	>= 2.0.6	All supported architectures

Related bugreports: #202718

Synopsis

A Denial of Service vulnerability has been discovered in Syslog-ng.

2. Impact Information

Background

Syslog-ng is a flexible and scalable system logger.

Description

Oriol Carreras reported a NULL pointer dereference in the log_msg_parse() function when processing timestamps without a terminating whitespace character.

Impact

A remote attacker could send a specially crafted event to a vulnerable Syslog-ng server, resulting in a crash.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Syslog-ng users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/syslog-ng-2.0.6"

4. References

CVE-2007-6437

Updated December 29, 2007

Summary: This is a Gentoo Linux Security Advisory

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