Vulnerability Report

CVE-2011-1951

Title: Oneidentity Syslog-Ng Denial of Service (DoS)

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2011-1951.

CWE Category CWE-399
Published Date Jul 11, 2011
Modified Date Jun 16, 2026
Exploit Status Not Found
Score 4.3 CVSS v2.0
Exploit Probability (EPSS)
2.46%

Vulnerability Summary

CVE-2011-1951: 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.

Impacted Vendors

O
oneidentity 1
P
pcre 1
P
perl 1
B
balabit 1

Reference Links

http://git.balabit.hu/?p=bazsi/syslog-ng-3.2.git%3Ba=commit%3Bh=09710c0b105e579d35c7b5f6c66d1ea5e3a3d3ff http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062107.html http://secunia.com/advisories/45122 http://www.openwall.com/lists/oss-security/2011/05/26/1 http://www.securityfocus.com/bid/47800 https://bugzilla.redhat.com/show_bug.cgi?id=709088 http://git.balabit.hu/?p=bazsi/syslog-ng-3.2.git%3Ba=commit%3Bh=09710c0b105e579d35c7b5f6c66d1ea5e3a3d3ff http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062107.html http://secunia.com/advisories/45122 http://www.openwall.com/lists/oss-security/2011/05/26/1 http://www.securityfocus.com/bid/47800 https://bugzilla.redhat.com/show_bug.cgi?id=709088
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
4.3
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:M/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2011-1951 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A
Complexity N/A
Privileges N/A
Interaction NONE
CVSS Vector String AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected Stack

No specific products linked.