Debian DSA-2015-1 : drbd8 - privilege escalation

high Nessus Plugin ID 45069

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Synopsis

The remote Debian host is missing a security-related update.

Description

A local vulnerability has been discovered in drbd8.

Philipp Reisner fixed an issue in the drbd kernel module that allows local users to send netlink packets to perform actions that should be restricted to users with CAP_SYS_ADMIN privileges. This is a similar issue to those described by CVE-2009-3725.

This update also fixes an ABI compatibility issue which was introduced by linux-2.6 (2.6.26-21lenny3). The prebuilt drbd module packages listed in this advisory require a linux-image package version 2.6.26-21lenny3 or greater.

Solution

Upgrade the drbd8 packages.

For the stable distribution (lenny), this problem has been fixed in drbd8 (2:8.0.14-2+lenny1).

The linux-modules-extra-2.6 package has been rebuilt against the updated drbd8 package to provide fixed prebuilt drbd8-modules packages. If, instead of using the prebuilt drbd8-modules packages, you have built and installed a local copy of the drbd module from the drbd8-source package (e.g., using module-assistant), you will need to follow the same steps you originally used to rebuild your module after upgrading the drbd8-source package.

Note: After upgrading a kernel module you must reload the module for the changes to take effect :

- Shutdown all services that make use of the drbd module
- Unload the previous drbd module (modprobe -r drbd)

- Load the updated drbd module (modprobe drbd)

- Restart any services that make use of the drbd module

A system reboot will also cause the updated module to be used.

Plugin Details

Severity: High

ID: 45069

File Name: debian_DSA-2015.nasl

Version: 1.9

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 3/17/2010

Updated: 1/4/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:drbd8, cpe:/o:debian:debian_linux:5.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Patch Publication Date: 3/15/2010

Reference Information

DSA: 2015

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