MEDIUM
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.
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
Source: MITRE
Published: 2016-09-21
Updated: 2017-11-04
Type: CWE-190
Base Score: 6.8
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 7.8
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH