Ubuntu 11.04: USN-1172-1 Critical: Logrotate Local Code Execution

ubuntu

July 21, 2011

An attacker could cause logrotate to run programs, stop working, or read and write arbitrary files.

Summary

An attacker could cause logrotate to run programs, stop working, or read

and write arbitrary files.

Software Description:

- logrotate: Log rotation utility

Details:

It was discovered that logrotate incorrectly handled the creation of new

log files. Local users could possibly read log files if they were opened

before permissions were in place. This issue only affected Ubuntu 8.04 LTS.

(CVE-2011-1098)

It was discovered that logrotate incorrectly handled certain log file

names when used with the shred option. Local attackers able to create log

files with specially crafted filenames could use this issue to execute

arbitrary code. This issue only affected Ubuntu 10.04 LTS, 10.10, and

11.04. (CVE-2011-1154)

It was discovered that logrotate incorrectly handled certain malformed log

filenames. Local attackers able to create log files with specially crafted

filenames could use this issue to cause logrotate to stop processing log

files, resulting in a denial of se...

Read the Full Advisory

Topics Covered

security advisory critical Ubuntu local code execution logrotate file permission risk

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 11.04:
  logrotate                       3.7.8-6ubuntu3.1

Ubuntu 10.10:
  logrotate                       3.7.8-6ubuntu1.1

Ubuntu 10.04 LTS:
  logrotate                       3.7.8-4ubuntu2.2

Ubuntu 8.04 LTS:
  logrotate                       3.7.1-3ubuntu0.8.04.1

In general, a standard system update will make all the necessary changes.