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CVE-2011-1548

Status Candidate

Overview

The default configuration of logrotate on Debian GNU/Linux uses root privileges to process files in directories that permit non-root write access, which allows local users to conduct symlink and hard link attacks by leveraging logrotate's lack of support for untrusted directories, as demonstrated by /var/log/postgresql/.

Related Files

Ubuntu Security Notice USN-1172-1
Posted Jul 22, 2011
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1172-1 - 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. 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. Various other issues were also addressed.

tags | advisory, arbitrary, local
systems | linux, ubuntu
advisories | CVE-2011-1098, CVE-2011-1154, CVE-2011-1155, CVE-2011-1548
MD5 | 8bb9d7dd6f0690e2b71a26732e992535
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