CVE-2011-1951
Balabit syslog-ng Regular Expression Denial of Service
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.
INFO
Published Date :
July 11, 2011, 8:55 p.m.
Last Modified :
Nov. 21, 2024, 1:27 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.9
Exploitability Score :
8.6
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2011-1951.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2011-1951 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2011-1951 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://git.balabit.hu/?p=bazsi/syslog-ng-3.2.git%3Ba=commit%3Bh=09710c0b105e579d35c7b5f6c66d1ea5e3a3d3ff Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062107.html Added Reference http://secunia.com/advisories/45122 Added Reference http://www.openwall.com/lists/oss-security/2011/05/26/1 Added Reference http://www.securityfocus.com/bid/47800 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=709088 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 13, 2023
Action Type Old Value New Value Removed Reference http://git.balabit.hu/?p=bazsi/syslog-ng-3.2.git;a=commit;h=09710c0b105e579d35c7b5f6c66d1ea5e3a3d3ff [Broken Link, Patch] Added Reference http://git.balabit.hu/?p=bazsi/syslog-ng-3.2.git%3Ba=commit%3Bh=09710c0b105e579d35c7b5f6c66d1ea5e3a3d3ff [No Types Assigned] -
Reanalysis by [email protected]
May. 19, 2020
Action Type Old Value New Value Changed Reference Type http://git.balabit.hu/?p=bazsi/syslog-ng-3.2.git;a=commit;h=09710c0b105e579d35c7b5f6c66d1ea5e3a3d3ff Patch http://git.balabit.hu/?p=bazsi/syslog-ng-3.2.git;a=commit;h=09710c0b105e579d35c7b5f6c66d1ea5e3a3d3ff Broken Link, Patch Changed Reference Type http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062107.html No Types Assigned http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062107.html Mailing List, Third Party Advisory Changed Reference Type http://secunia.com/advisories/45122 Vendor Advisory http://secunia.com/advisories/45122 Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2011/05/26/1 Patch http://www.openwall.com/lists/oss-security/2011/05/26/1 Mailing List, Patch, Third Party Advisory Changed Reference Type http://www.securityfocus.com/bid/47800 No Types Assigned http://www.securityfocus.com/bid/47800 Third Party Advisory, VDB Entry Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=709088 Patch https://bugzilla.redhat.com/show_bug.cgi?id=709088 Issue Tracking, Patch, Third Party Advisory Changed CPE Configuration AND OR *cpe:2.3:a:balabit:syslog-ng:1.0:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:1.1:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:1.2:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:1.3:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:1.4:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:1.5:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:1.6:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:1.9:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:2.0:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:2.0.10:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:2.1:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:2.1.3:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:2.1.4:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.0:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.0.1:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.0.2:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.0.3:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.0.4:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.0.5:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.0.6:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.0.7:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.0.8:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.0.9:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.0.10:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.1:beta1:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.1:beta2:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.1.0:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.1.1:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.1.2:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.1.3:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.1.4:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.2:alpha1:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.2:alpha2:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.2:beta1:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.2.1:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:3.2.2:*:open_source:*:*:*:*:* *cpe:2.3:a:balabit:syslog-ng:*:*:open_source:*:*:*:*:* versions up to (including) 3.2.3 OR cpe:2.3:a:pcre:pcre:8.12:*:*:*:*:*:*:* AND OR *cpe:2.3:a:oneidentity:syslog-ng:*:*:*:*:*:*:*:* versions up to (excluding) 3.2.4 OR cpe:2.3:a:pcre:pcre:8.12:*:*:*:*:*:*:* -
Initial Analysis by [email protected]
Jul. 12, 2011
Action Type Old Value New Value
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2011-1951 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2011-1951
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.80 }} -0.46%
score
0.81442
percentile