CVE-2016-4300: Integer Overflow
First published: Tue Jun 21 2016(Updated: )
An exploitable heap overflow vulnerability exists in the 7zip read_SubStreamsInfo functionality of libarchive. A specially crafted 7zip file can cause a integer overflow resulting in memory corruption that can lead to code execution. An attacker can send a malformed file to trigger this vulnerability. External references: <a href="http://www.talosintel.com/reports/TALOS-2016-0152/">http://www.talosintel.com/reports/TALOS-2016-0152/</a> Upstream fix: <a href="https://github.com/libarchive/libarchive/commit/e79ef306afe332faf22e9b442a2c6b59cb175573">https://github.com/libarchive/libarchive/commit/e79ef306afe332faf22e9b442a2c6b59cb175573</a>
Credit: cret@cert.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/libarchive | <3.2.1 | 3.2.1 |
| Oracle Libarchive | <=3.2.0 | |
| Red Hat Enterprise Linux Desktop | =7.0 | |
| Red Hat Enterprise Linux HPC Node | =7.0 | |
| Red Hat Enterprise Linux HPC Node | =7.2 | |
| Red Hat Enterprise Linux Server | =7.0 | |
| Red Hat Enterprise Linux Server | =7.2 | |
| Red Hat Enterprise Linux Server | =7.2 | |
| Red Hat Enterprise Linux Workstation | =7.0 |
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Reference Links
- http://www.talosintel.com/reports/TALOS-2016-0152/
- https://github.com/libarchive/libarchive/commit/e79ef306afe332faf22e9b442a2c6b59cb175573
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1352776
- https://rhn.redhat.com/errata/RHSA-2016-1844.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1348439
- http://blog.talosintel.com/2016/06/the-poisoned-archives.html
- http://rhn.redhat.com/errata/RHSA-2016-1844.html
- http://www.debian.org/security/2016/dsa-3657
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- http://www.securityfocus.com/bid/91326
- https://github.com/libarchive/libarchive/issues/718
- https://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00062&languageid=en-fr
- https://security.gentoo.org/glsa/201701-03
Frequently Asked Questions
What is the severity of CVE-2016-4300?
CVE-2016-4300 is categorized as a critical vulnerability due to its potential for remote code execution.
How do I fix CVE-2016-4300?
To mitigate CVE-2016-4300, update the libarchive package to version 3.2.1 or later.
What causes the vulnerability CVE-2016-4300?
CVE-2016-4300 is caused by a heap overflow in the read_SubStreamsInfo functionality of libarchive when processing specially crafted 7zip files.
What are the affected software versions for CVE-2016-4300?
CVE-2016-4300 affects libarchive versions up to 3.2.0 and specific versions of Red Hat Enterprise Linux 7.0 and 7.2.
Can CVE-2016-4300 be exploited remotely?
Yes, an attacker can exploit CVE-2016-4300 remotely by sending a specially crafted 7zip file.
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