GNU C Library 2.14 Format String Protection numeric error

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in GNU C Library 2.14 and classified as problematic. Affected by this issue is some unknown functionality of the component Format String Protection. The manipulation leads to numeric error. This vulnerability is handled as CVE-2012-0864. Furthermore, there is an exploit available. It is recommended to apply a patch to fix this issue. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Detailsinfo

A vulnerability has been found in GNU C Library 2.14 (Software Library) and classified as problematic. Affected by this vulnerability is some unknown processing of the component Format String Protection. The manipulation with an unknown input leads to a numeric error vulnerability. The CWE definition for the vulnerability is CWE-189. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Integer overflow in the vfprintf function in stdio-common/vfprintf.c in glibc 2.14 and other versions allows context-dependent attackers to bypass the FORTIFY_SOURCE protection mechanism, conduct format string attacks, and write to arbitrary memory via a large number of arguments.

The issue has been introduced in 06/01/2011. The weakness was published 02/17/2012 by Stefan Cornelius with Red Hat Security Response Team (Website). It is possible to read the advisory at vmware.com. This vulnerability is known as CVE-2012-0864 since 01/19/2012. Attacking locally is a requirement. Required for exploitation is a single authentication. Technical details are unknown but a public exploit is available.

It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 261 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 68497 (Oracle Linux 6 : glibc (ELSA-2012-0393)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 216049 (VMWare ESXi 5.1.0 Patch Complete Update 1 Missing (KB2041632)).

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

The vulnerability is also documented in the databases at Exploit-DB (25134), Tenable (68497), SecurityFocus (BID 52201†), OSVDB (79705†) and Secunia (SA51555†). Similar entries are available at VDB-4619, VDB-4996, VDB-5407 and VDB-5611. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 68497
Nessus Name: Oracle Linux 6 : glibc (ELSA-2012-0393)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 881169
OpenVAS Name: CentOS Update for glibc CESA-2012:0393 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: bugzilla.redhat.com

Timelineinfo

06/01/2011 🔍
01/19/2012 +232 days 🔍
02/17/2012 +29 days 🔍
02/25/2012 +8 days 🔍
02/28/2012 +3 days 🔍
03/02/2012 +3 days 🔍
03/15/2012 +13 days 🔍
05/02/2013 +413 days 🔍
07/12/2013 +71 days 🔍
06/23/2024 +3999 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: vmware.com
Researcher: Stefan Cornelius
Organization: Red Hat Security Response Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-0864 (🔍)
GCVE (CVE): GCVE-0-2012-0864
GCVE (VulDB): GCVE-100-4675

OVAL: 🔍
IAVM: 🔍

SecurityFocus: 52201 - GNU glibc 'nargs' Integer Overflow Security Bypass Vulnerability
Secunia: 51555 - VMware ESXi glibc Multiple Vulnerabilities, Moderately Critical
OSVDB: 79705
SecurityTracker: 1026810

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

Entryinfo

Created: 03/02/2012 01:00 AM
Updated: 06/23/2024 03:34 PM
Changes: 03/02/2012 01:00 AM (90), 04/26/2019 09:25 PM (4), 06/23/2024 03:34 PM (16)
Complete: 🔍
Cache ID: 18:5E1:40

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