GNU C Library up to 2.19 IBM930 Data Converter iconv input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability was found in GNU C Library up to 2.19 and classified as problematic. This impacts the function iconv of the component IBM930 Data Converter. The manipulation with the input 0xFFFF results in input validation. This vulnerability is reported as CVE-2012-6656. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in GNU C Library up to 2.19 (Software Library). It has been classified as problematic. Affected is the function iconv of the component IBM930 Data Converter. The manipulation with the input value 0xFFFF leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability.

The weakness was disclosed 08/29/2014 by Adhemerval Zanella Netto (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is traded as CVE-2012-6656 since 09/01/2014. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 81029 (Debian DSA-3142-1 : eglibc - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195694 (Ubuntu Security Notification for Eglibc, Glibc Vulnerabilities (USN-2432-1)).

Upgrading to version 2.20 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (99154), Tenable (81029), SecurityFocus (BID 69472†), SecurityTracker (ID 1031308†) and Vulnerability Center (SBV-50951†). The entries VDB-67432, VDB-68254 and VDB-73110 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 81029
Nessus Name: Debian DSA-3142-1 : eglibc - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 703142
OpenVAS Name: Debian Security Advisory DSA 3142-1 (eglibc - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: C Library 2.20
Patch: 6e230d11837f3ae7b375ea69d7905f0d18eb79e5

Timelineinfo

08/29/2014 🔍
08/29/2014 +0 days 🔍
09/01/2014 +3 days 🔍
09/12/2014 +11 days 🔍
12/05/2014 +84 days 🔍
12/05/2014 +0 days 🔍
12/08/2014 +3 days 🔍
01/28/2015 +51 days 🔍
07/01/2015 +154 days 🔍
02/27/2022 +2433 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: USN-2432-1
Researcher: Adhemerval Zanella Netto
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-6656 (🔍)
GCVE (CVE): GCVE-0-2012-6656
GCVE (VulDB): GCVE-100-68352

OVAL: 🔍

X-Force: 99154 - GNU C Library ibm930.c denial of service, Medium Risk
SecurityFocus: 69472 - GNU glibc 'iconv()' Denial of Service Vulnerability
SecurityTracker: 1031308 - Glibc Out-of-bounds Memory Read Bugs in Converting IBM Encoded Data Let Remote or Local Users Deny Service
Vulnerability Center: 50951 - GNU glibc <2.16 Remote DoS Vulnerability via a Multibyte Character Value of \, Medium

See also: 🔍

Entryinfo

Created: 12/08/2014 09:27
Updated: 02/27/2022 16:20
Changes: 12/08/2014 09:27 (75), 07/03/2017 08:57 (10), 02/27/2022 16:13 (6), 02/27/2022 16:20 (1)
Complete: 🔍
Cache ID: 216:A62:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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