GNU C Library 2.x fnmatch resource management

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6.6$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in GNU C Library 2.x. The impacted element is the function fnmatch. The manipulation results in resource management. This vulnerability was named CVE-2011-1071. In addition, an exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in GNU C Library 2.x (Software Library). It has been classified as critical. Affected is the function fnmatch. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The GNU C Library (aka glibc or libc6) before 2.12.2 and Embedded GLIBC (EGLIBC) allow context-dependent attackers to execute arbitrary code or cause a denial of service (memory consumption) via a long UTF8 string that is used in an fnmatch call, aka a "stack extension attack," a related issue to CVE-2010-2898, CVE-2010-1917, and CVE-2007-4782, as originally reported for use of this library by Google Chrome.

The weakness was presented 02/25/2011 by Simon Berry-Byrne as Bug 11883 as confirmed bug report (Bugzilla). The advisory is shared for download at sourceware.org. This vulnerability is traded as CVE-2011-1071 since 02/24/2011. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

A public exploit has been developed in ANSI C. The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 53430 (CentOS 5 : glibc (CESA-2011:0412)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 216011 (VMWare ESXi 4.0.0 Patch Release ESXi400-201110001 Missing (KB1036397)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at sourceware.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (65671), Exploit-DB (17120), Tenable (53430), SecurityFocus (BID 46563†) and Secunia (SA43492†). See VDB-51484, VDB-53417, VDB-57049 and VDB-57029 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

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Nessus ID: 53430
Nessus Name: CentOS 5 : glibc (CESA-2011:0412)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 880538
OpenVAS Name: CentOS Update for glibc CESA-2011:0412 centos5 i386
OpenVAS File: 🔍
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Exploit-DB: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: sourceware.org

Timelineinfo

02/24/2011 🔍
02/25/2011 +0 days 🔍
02/25/2011 +0 days 🔍
02/25/2011 +0 days 🔍
02/25/2011 +0 days 🔍
03/21/2011 +24 days 🔍
04/05/2011 +15 days 🔍
04/08/2011 +3 days 🔍
01/08/2015 +1371 days 🔍
10/11/2024 +3564 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: Bug 11883
Researcher: Simon Berry-Byrne
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-1071 (🔍)
GCVE (CVE): GCVE-0-2011-1071
GCVE (VulDB): GCVE-100-4308

OVAL: 🔍
IAVM: 🔍

X-Force: 65671
SecurityFocus: 46563
Secunia: 43492 - GNU C Library "fnmatch()" Stack Corruption Vulnerability, Moderately Critical
SecurityTracker: 1025290 - Glibc Memory Corruption Flaw in fnmatch() May Let Remote Users Execute Arbitrary Code
Vulnerability Center: 47977 - GNU glibc before 2.12.2 \x27fnmatch()\x27 Function Remote Stack-Corruption Vulnerability, High
Vupen: ADV-2011-0863

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/21/2011 01:00
Updated: 10/11/2024 11:13
Changes: 03/21/2011 01:00 (86), 06/17/2017 07:45 (11), 03/19/2021 07:13 (4), 03/19/2021 07:16 (1), 10/11/2024 11:13 (15)
Complete: 🔍
Cache ID: 216:629:103

Once again VulDB remains the best source for vulnerability data.

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