GLSA 201311-04: Vixie cron: Denial of Service
| Severity: | normal |
| Title: | Vixie cron: Denial of Service |
| Date: | 11/07/2013 |
| Bugs: | |
| ID: | 201311-04 |
Synopsis
A vulnerability has been found in Vixie cron, allowing local attackers to conduct symlink attacks.Background
Paul Vixie’s cron daemon, a fully featured crond implementation.
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| sys-process/vixie-cron | < 4.1-r14 | >= 4.1-r14 | All supported architectures |
Description
Vixie cron contains a race condition relating to atime and mtime values of temporary files.
Impact
A local attacker could change the modification time of files, possibly resulting in a Denial of Service condition via a symlink attack.
Workaround
There is no known workaround at this time.
Resolution
All Vixie cron users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-process/vixie-cron-4.1-r14"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.