Vulnerability CVE-2016-4300
Published: 2016-09-21

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.

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Redhat -> Enterprise linux desktop 
Redhat -> Enterprise linux hpc node 
Redhat -> Enterprise linux hpc node eus 
Redhat -> Enterprise linux server 
Redhat -> Enterprise linux server aus 
Redhat -> Enterprise linux server eus 
Redhat -> Enterprise linux workstation 
Libarchive -> Libarchive 

 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-center.intel.com/advisory.aspx?intelid=INTEL-SA-00062&languageid=en-fr
https://security.gentoo.org/glsa/201701-03
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