GLSA 201708-08: bzip2: Denial of Service
| Severity: | normal |
| Title: | bzip2: Denial of Service |
| Date: | 08/21/2017 |
| Bugs: | |
| ID: | 201708-08 |
Synopsis
An use-after-free vulnerability has been found in bzip2 that could allow remote attackers to cause a Denial of Service condition.Background
bzip2 is a high-quality data compressor used extensively by Gentoo Linux.
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| app-arch/bzip2 | < 1.0.6-r8 | >= 1.0.6-r8 | All supported architectures |
Description
A use-after-free flaw was found in bzip2recover, leading to a null pointer dereference, or a write to a closed file descriptor. Please review the CVE identifier referenced below for details.
Impact
A remote attacker could entice a user to process a specially crafted bzip2 archive using bzip2recover, possibly resulting in a Denial of Service condition.
Workaround
There is no known workaround at this time.
Resolution
All bzip2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/bzip2-1.0.6-r8"
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.