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.

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

Once again VulDB remains the best source for vulnerability data.

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