GNU C Library up to 2.17 string/strcoll_l.c alloca memory corruption

CVSS Meta Temp Score
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6.6$0-$5k0.00

A vulnerability was found in GNU C Library up to 2.17 (Software Library). It has been rated as critical. Affected by this issue is the function alloca of the file string/strcoll_l.c of the component C Library. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Stack-based buffer overflow in string/strcoll_l.c in the GNU C Library (aka glibc or libc6) 2.17 and earlier allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a long string that triggers a malloc failure and use of the alloca function.

The weakness was published 09/06/2012 with Red Hat Security Response Team as Issue #2 as not defined mailinglist post (oss-sec). The advisory is available at seclists.org. This vulnerability is handled as CVE-2012-4424 since 08/21/2012. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.

A public exploit has been developed in ANSI C. The exploit is available at securityfocus.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 69488 (Fedora 19 : glibc-2.17-14.fc19 (2013-15316)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195942 (Ubuntu Security Notification for Eglibc Vulnerabilities (USN-1991-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at sourceware.org. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (69488). Similar entry is available at 10609.

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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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

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

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Nessus ID: 69488
Nessus Name: Fedora 19 : glibc-2.17-14.fc19 (2013-15316)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 866841
OpenVAS Name: Fedora Update for glibc FEDORA-2013-15053
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
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Patch: sourceware.org

Timelineinfo

08/21/2012 🔍
09/06/2012 +16 days 🔍
09/07/2012 +1 days 🔍
09/07/2012 +0 days 🔍
09/17/2013 +375 days 🔍
09/23/2013 +6 days 🔍
10/09/2013 +16 days 🔍
10/09/2013 +0 days 🔍
05/26/2021 +2786 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: Issue #2
Organization: Red Hat Security Response Team
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-4424 (🔍)
OVAL: 🔍

Vulnerability Center: 41533 - GNU glibc 2.16 \x27strcoll()\x27 Remote Stack Based Buffer Overflow Vulnerability Allows Remote Code Execution, High
SecurityFocus: 55543 - GNU glibc 'strcoll()' Routine CVE-2012-4424 Stack Overflow Vulnerability
OSVDB: 98143

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

Entryinfo

Created: 10/09/2013 10:05
Updated: 05/26/2021 10:11
Changes: 10/09/2013 10:05 (81), 05/11/2017 08:51 (6), 05/26/2021 10:11 (3)
Complete: 🔍
Committer: olku

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