CVE-2011-1951 Denial of service in n/a
Remote attackers can cause denial of service via memory consumption in syslog-ng when specific global flags and PCRE versions are used.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-1951?
CVE-2011-1951 is a medium-severity denial of service vulnerability in n/a, published on 11 Jul 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
lib/logmatcher.c in Balabit syslog-ng before 3.2.4, when the global flag is set and when using PCRE 8.12 and possibly other versions, allows remote attackers to cause a denial of service (memory consumption) via a message that does not match a regular expression.
Weakness: CWE-399
Which versions are affected by CVE-2011-1951?
It affects 1 product.
Products include Oneidentity Syslog-Ng.
How do I fix CVE-2011-1951?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2011-1951 being exploited?
There is no known exploitation of CVE-2011-1951 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2011-1951, GHSA-7jqv-hh4c-ww3h.