GNU C Library 2.18 File Name readdir_r.c readdir_r NAME_MAX memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

A vulnerability was found in GNU C Library 2.18 (Software Library). It has been declared as problematic. Affected by this vulnerability is the function readdir_r of the file sysdeps/posix/readdir_r.c of the component File Name Handler. The manipulation of the argument NAME_MAX with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

sysdeps/posix/readdir_r.c in the GNU C Library (aka glibc or libc6) 2.18 and earlier allows context-dependent attackers to cause a denial of service (out-of-bounds write and crash) or possibly execute arbitrary code via a crafted (1) NTFS or (2) CIFS image.

The weakness was shared 10/11/2012 by Florian Weimer with Red Hat Security Response Team as confirmed mailinglist post (oss-sec). It is possible to read the advisory at seclists.org. The vendor cooperated in the coordination of the public release. This vulnerability is known as CVE-2013-4237 since 06/12/2013. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 78408 (RHEL 6 : glibc (RHSA-2014:1391)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350811 (Amazon Linux Security Advisory for glibc: AL2012-2015-020).

Upgrading to version 2.19 eliminates this vulnerability. The upgrade is hosted for download at sourceware.org. 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 patching the affected component. A possible mitigation has been published 12 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (86407) and Tenable (78408). Additional details are provided at seclists.org. The entries 7570, 10293, 10294 and 10583 are related to this item.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
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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: 🔍
Status: Not defined

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EPSS Percentile: 🔍

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Current Price Estimation: 🔍

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Nessus ID: 78408
Nessus Name: RHEL 6 : glibc (RHSA-2014:1391)
Nessus File: 🔍
Nessus Risk: 🔍
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OpenVAS ID: 866841
OpenVAS Name: Fedora Update for glibc FEDORA-2013-15053
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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Upgrade: C Library 2.19
Patch: sourceware.org

Timelineinfo

10/11/2012 🔍
06/12/2013 +244 days 🔍
08/11/2013 +60 days 🔍
08/11/2013 +0 days 🔍
08/16/2013 +5 days 🔍
08/20/2013 +4 days 🔍
10/01/2013 +42 days 🔍
10/09/2013 +8 days 🔍
01/16/2014 +99 days 🔍
10/14/2014 +271 days 🔍
05/21/2021 +2411 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: seclists.org
Researcher: Florian Weimer
Organization: Red Hat Security Response Team
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-4237 (🔍)
OVAL: 🔍

X-Force: 86407
Vulnerability Center: 42995 - GNU GlibC 2.18 and Prior Remote Denial of Service and Code Execution via a Malicious NTFS or CIFS Image, Medium
SecurityFocus: 61729 - GNU glibc CVE-2013-4237 Remote Buffer Overflow Vulnerability
Secunia: 55113 - SUSE update for glibc, Less Critical
OSVDB: 96318

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 08/20/2013 12:39
Updated: 05/21/2021 15:26
Changes: 08/20/2013 12:39 (94), 05/19/2017 10:59 (2), 05/21/2021 15:26 (3)
Complete: 🔍
Committer:

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