Heap-based buffer overflow in libarchive - CVE-2016-4300

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Integer overflow in the read_SubStreamsInfo function in archive_read_support_format_7zip.c in libarchive before 3.2.1. A remote attacker can use a 7zip file with a large number of substreams to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Affected software

How to mitigate CVE-2016-4300

External References

• 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
• http://www.talosintel.com/reports/TALOS-2016-0152/
• https://bugzilla.redhat.com/show_bug.cgi?id=1348439
• https://github.com/libarchive/libarchive/commit/e79ef306afe332faf22e9b442a2c6b59cb175573
• https://github.com/libarchive/libarchive/issues/718
• https://security.gentoo.org/glsa/201701-03
• https://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00062&languageid=en-fr

Related Security Bulletins

• Heap-based buffer overflow in libarchive
• Heap-based buffer overflow in libarchive (Alpine package)