Heap-based buffer overflow in libarchive - CVE-2016-4302

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 Heap-based buffer overflow in the parse_codes function in archive_read_support_format_rar.c in libarchive before 3.2.1. A remote attacker can use a RAR file with a zero-sized dictionary. 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-2016-4302

External References

• http://blog.talosintel.com/2016/06/the-poisoned-archives.html
• http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=1348444
• 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/91331
• http://www.talosintel.com/reports/TALOS-2016-0154/
• https://github.com/libarchive/libarchive/commit/05caadc7eedbef471ac9610809ba683f0c698700
• https://github.com/libarchive/libarchive/issues/719
• https://security.gentoo.org/glsa/201701-03

Related Security Bulletins

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