Orange Applications for Business
Vigil@nce Vigil@nce Vigil@nce
analyzing computer vulnerabilities since 1999
  home presentation vulnerabilities documentation contact  
subscriber area subscriber area
free trial free trial
The Vigil@nce team watches vulnerabilities impacting your computers, and then offers security solutions, a database and tools to fix them.
recent vulnerabilities recent vulnerabilities
tracked products tracked products
RSS feed RSS feed

vulnerability announce CVE-2013-4299

Linux kernel: information disclosure via device-mapper

Synthesis of the vulnerability

An attacker can create metadata via the device-mapper of the Linux kernel, in order to read the content of free disk blocks.
Impacted products: Debian, Linux, RHEL, SUSE Linux Enterprise Desktop, SLES.
Severity: 2/4.
Creation date: 17/10/2013.
Identifiers: 1004233, BID-63183, CERTFR-2014-AVI-388, CVE-2013-4299, DSA-2906-1, RHSA-2013:1436-01, RHSA-2013:1449-01, RHSA-2013:1450-01, RHSA-2013:1490-01, RHSA-2013:1519-01, RHSA-2013:1520-01, RHSA-2013:1783-01, RHSA-2013:1860-01, SUSE-SU-2014:0908-1, SUSE-SU-2014:0909-1, SUSE-SU-2014:0910-1, SUSE-SU-2014:0911-1, SUSE-SU-2014:0912-1, SUSE-SU-2014:1105-1, VIGILANCE-VUL-13612.

Description of the vulnerability

The device-mapper subsystem is used to access to hard disks.

The Snapshot feature is used to create a fixed image, in order to save it for example, and allows the edition of data, which are synchronized later. However, the read_exceptions() function of the drivers/md/dm-snap-persistent.c file does not check if user's data contain metadata (control) data.

An attacker can therefore create metadata via the device-mapper of the Linux kernel, in order to read the content of free disk blocks.
Complete Vigil@nce bulletin.... (free trial)

Share this bulletin

Delicious Digg Facebook Google bookmarks LinkedIn Mail Reddit StumbleUpon Technorati Twitter 

Computer vulnerabilities tracking service

Vigil@nce provides a software vulnerabilities announce. The Vigil@nce security watch publishes vulnerability bulletins about threats impacting the information system. The Vigil@nce vulnerability database contains several thousand vulnerabilities. The Vigil@nce team tracks computer vulnerabilities impacting systems and applications.

Copyright 1999-2015 Vigil@nce. Vigil@nce is a service from Orange Applications for Business. Site map. Legal notice. version française