National Vulnerability Database

National Vulnerability Database

National Vulnerability

CVE-2013-4788 Detail

Current Description

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.

Source:  MITRE      Last Modified:  10/04/2013      View Analysis Description

Evaluator Description

Additional information that was taken into consideration while scoring:

Quick Info

CVE Dictionary Entry:
Original release date:
Last revised:


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

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Hyperlink Resource Type Source Name Exploit; Patch External Source MISC External Source FULLDISC 20150907 Glibc Pointer guarding weakness External Source MANDRIVA MDVSA-2013:283 External Source MANDRIVA MDVSA-2013:284 Exploit; Patch External Source MLIST [oss-security] 20130716 Re: CVE-2013-4788 - Eglibc PTR MANGLE bug External Source BID 61183 External Source GENTOO GLSA-201503-04

Technical Details

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Change History 4 change records found - show changes