SB2013032203 - Permissions, Privileges, and Access Controls in Linux kernel

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Main Vulnerability Database SB2013032203

SB2013032203 - Permissions, Privileges, and Access Controls in Linux kernel

Published: March 22, 2013 Updated: August 11, 2020

Security Bulletin ID SB2013032203
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2013-0914)

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

The flush_signal_handlers function in kernel/signal.c in the Linux kernel before 3.8.4 preserves the value of the sa_restorer field across an exec operation, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application containing a sigaction system call.


Remediation

Install update from vendor's website.

References