syslog-ng: Denial of Service

Background

syslog replacement with advanced filtering features.

Description

An integer overflow in the RFC3164 parser allows remote attackers to cause a denial of service via crafted syslog input that is mishandled by the tcp or network function.

Impact

Attackers with access to input syslogs over syslog-ng’s network functionality can cause a denial of service.

Workaround

There is no known workaround at this time.

Resolution

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

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=app-admin/syslog-ng-3.38.1"