CVE-2011-1951

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.

Category

4.3
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 1.55% Top 20%
Vendor Advisory fedoraproject.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://git.balabit.hu/?p=bazsi/syslog-ng-3.2.git%3Ba=commit%3Bh=09710c0b105e579d35c7b5f6c66d1ea5e3a3d3ff
https://bugzilla.redhat.com/show_bug.cgi?id=709088 patch third party advisory issue tracking
http://www.openwall.com/lists/oss-security/2011/05/26/1 patch mailing list third party advisory
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062107.html vendor advisory mailing list third party advisory
http://www.securityfocus.com/bid/47800 third party advisory vdb entry
http://secunia.com/advisories/45122 third party advisory

Frequently Asked Questions

What is the severity of CVE-2011-1951?
CVE-2011-1951 has been scored as a medium severity vulnerability.
How to fix CVE-2011-1951?
To fix CVE-2011-1951, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-1951 being actively exploited in the wild?
It is possible that CVE-2011-1951 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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