CVE-2016-4300 Information

Description

Integer overflow in the read_SubStreamsInfo function in archive_read_support_format_7zip.c in libarchive before 3.2.1 allows remote attackers to execute arbitrary code via a 7zip file with a large number of substreams which triggers a heap-based buffer overflow.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8