Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2013-4788

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
04/10/2013
Last modified:
11/04/2025

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.

Impact

Vector 2.0
AV:N/AC:H/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.10 MEDIUM
Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): High
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
5.10
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* 2.17 (including)
cpe:2.3:a:gnu:glibc:2.0:*:*:*:*:*:*:*
cpe:2.3:a:gnu:glibc:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:gnu:glibc:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:gnu:glibc:2.0.3:*:*:*:*:*:*:*
cpe:2.3:a:gnu:glibc:2.0.4:*:*:*:*:*:*:*
cpe:2.3:a:gnu:glibc:2.0.5:*:*:*:*:*:*:*
cpe:2.3:a:gnu:glibc:2.0.6:*:*:*:*:*:*:*
cpe:2.3:a:gnu:glibc:2.1:*:*:*:*:*:*:*
cpe:2.3:a:gnu:glibc:2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:gnu:glibc:2.1.1.6:*:*:*:*:*:*:*
cpe:2.3:a:gnu:glibc:2.1.2:*:*:*:*:*:*:*
cpe:2.3:a:gnu:glibc:2.1.3:*:*:*:*:*:*:*
cpe:2.3:a:gnu:glibc:2.1.9:*:*:*:*:*:*:*
cpe:2.3:a:gnu:glibc:2.4:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools