GLSA 201402-19: libtar: Arbitraty code execution
| Severity: | normal |
| Title: | libtar: Arbitraty code execution |
| Date: | 02/21/2014 |
| Bugs: | |
| ID: | 201402-19 |
Synopsis
A buffer overflow in libtar might allow remote attackers to execute arbitrary code or cause a Denial of Service condition.Background
libtar is a C library for manipulating POSIX tar files.
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| dev-libs/libtar | < 1.2.20-r2 | >= 1.2.20-r2 | All supported architectures |
Description
An integer overflow error within the “th_read()” function when processing long names or link extensions can be exploited to cause a heap-based buffer overflow via a specially crafted archive.
Impact
A remote attacker could entice a user to open a specially crafted file using a program linked against libtar, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.
Workaround
There is no known workaround at this time.
Resolution
All libtar users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libtar-1.2.20-r2"
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.