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Last updated: 10/25/2014 3:51:54 AM

CVE Publication rate: 50.87

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Vulnerability Summary for CVE-2013-4788

Original release date: 10/04/2013
Last revised: 12/13/2013
Source: US-CERT/NIST

Overview

The PTR_MANGLE implementation in the GNU C Library (aka glibc or libc6) 2.4, 2.17, and earlier, and Embedded GLIBC (EGLIBC) does not initialize the random value for the pointer guard, which makes it easier for context-dependent attackers to control execution flow by leveraging a buffer-overflow vulnerability in an application and using the known zero value pointer guard to calculate a pointer address.

Description

Additional information that was taken into consideration while scoring: https://bugzilla.redhat.com/show_bug.cgi?id=985625

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.1 (MEDIUM) (AV:N/AC:H/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore: 6.4
Exploitability Subscore: 4.9
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: High
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

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External Source: MISC
Name: http://hmarco.org/bugs/CVE-2013-4788.html
Type: Patch Information; Exploit
External Source: MANDRIVA
Name: MDVSA-2013:283
External Source: MLIST
Name: [oss-security] 20130716 Re: CVE-2013-4788 - Eglibc PTR MANGLE bug
Type: Patch Information; Exploit
External Source: MANDRIVA
Name: MDVSA-2013:284

Technical Details

Vulnerability Type (View All)