Rsyslog · Rsyslog · CVE-2011-3200
**Name of the Vulnerable Software and Affected Versions**
rsyslog versions 4.6.x through 4.6.7
rsyslog versions 5.2.0 through 5.8.4
**Description**
The issue is related to a stack-based buffer overflow in the `parseLegacySyslogMsg` function in `tools/syslogd.c` in `rsyslogd`. This might allow remote attackers to cause a denial of service (application exit) via a long `TAG` in a legacy syslog message. The vulnerability can be exploited remotely and may lead to disruption of protected information availability.
**Recommendations**
For rsyslog versions 4.6.x through 4.6.7, update to version 4.6.8 or later.
For rsyslog versions 5.2.0 through 5.8.4, update to a version later than 5.8.4.
As a temporary workaround, consider restricting access to the `parseLegacySyslogMsg` function until a patch is available.