Balabit syslog-ng up to 3.2.3 lib/logmatcher.c resource management

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Balabit syslog-ng and classified as problematic. This issue affects some unknown processing in the library lib/logmatcher.c. Such manipulation leads to resource management. This vulnerability is listed as CVE-2011-1951. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Balabit syslog-ng. Affected by this issue is an unknown code in the library lib/logmatcher.c. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. CVE summarizes:

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.

The weakness was presented 07/11/2011 as Bug 709088 as not defined bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2011-1951 since 05/09/2011. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 55462 (Fedora 14 : syslog-ng-3.1.4-4.fc14 (2011-8405)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks.

Upgrading to version 2.0.10 eliminates this vulnerability. Applying the patch 09710c0b105e579d35c7b5f6c66d1ea5e3a3d3ff is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (67404), Tenable (55462), SecurityFocus (BID 47800†), Secunia (SA45122†) and Vulnerability Center (SBV-31638†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 55462
Nessus Name: Fedora 14 : syslog-ng-3.1.4-4.fc14 (2011-8405)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 863318
OpenVAS Name: Fedora Update for syslog-ng FEDORA-2011-8405
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: syslog-ng 2.0.10
Patch: 09710c0b105e579d35c7b5f6c66d1ea5e3a3d3ff

Timelineinfo

05/09/2011 🔍
05/11/2011 +2 days 🔍
05/11/2011 +0 days 🔍
06/05/2011 +25 days 🔍
06/30/2011 +25 days 🔍
06/30/2011 +0 days 🔍
07/11/2011 +11 days 🔍
07/11/2011 +0 days 🔍
03/23/2015 +1351 days 🔍
11/14/2021 +2428 days 🔍

Sourcesinfo

Advisory: Bug 709088
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-1951 (🔍)
GCVE (CVE): GCVE-0-2011-1951
GCVE (VulDB): GCVE-100-57908
X-Force: 67404
SecurityFocus: 47800 - BalaBit IT Security syslog-ng PCRE Denial of Service Vulnerability
Secunia: 45122 - Fedora update for syslog-ng, Less Critical
Vulnerability Center: 31638 - BalaBit IT Security syslog-ng before 3.2.4 PCRE Implementation Remote DoS Vulnerability, Medium

Entryinfo

Created: 03/23/2015 16:50
Updated: 11/14/2021 09:42
Changes: 03/23/2015 16:50 (64), 03/23/2017 07:48 (12), 11/14/2021 09:39 (4), 11/14/2021 09:42 (1)
Complete: 🔍
Cache ID: 216::103

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