CVE-2016-1834

high-risk

Published 2016-05-20

Heap-based buffer overflow in the xmlStrncat function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted XML document.

Do I need to act?

2.4% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.8/10 High

LOCAL / LOW complexity

Affected Products (20)

Ubuntu Linux

Iphone Os

Mac Os X

Tvos

Watchos

Debian Linux

Enterprise Linux Desktop

Enterprise Linux Server

Enterprise Linux Server Aus

Enterprise Linux Server Eus

Enterprise Linux Server Tus

Enterprise Linux Workstation

Affected Vendors

Xmlsoft Debian Canonical Mcafee Redhat Apple

References (42)

Mailing List http://lists.apple.com/archives/security-announce/2016/May/msg00001.html

Mailing List http://lists.apple.com/archives/security-announce/2016/May/msg00002.html

Mailing List http://lists.apple.com/archives/security-announce/2016/May/msg00003.html

Mailing List http://lists.apple.com/archives/security-announce/2016/May/msg00004.html

Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-2957.html

Third Party Advisory http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.h...

Third Party Advisory http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htm...

Third Party Advisory http://www.securityfocus.com/bid/90691

Third Party Advisory http://www.securitytracker.com/id/1035890

Third Party Advisory http://www.ubuntu.com/usn/USN-2994-1

Release Notes http://xmlsoft.org/news.html

Third Party Advisory https://access.redhat.com/errata/RHSA-2016:1292

Exploit https://bugzilla.gnome.org/show_bug.cgi?id=763071

Patch https://git.gnome.org/browse/libxml2/commit/?id=8fbbf5513d609c1770b391b99e33314c...

Patch https://kc.mcafee.com/corporate/index?page=content&id=SB10170

Vendor Advisory https://support.apple.com/HT206564

Vendor Advisory https://support.apple.com/HT206566

Vendor Advisory https://support.apple.com/HT206567

Vendor Advisory https://support.apple.com/HT206568

Third Party Advisory https://www.debian.org/security/2016/dsa-3593

and 22 more references

/ 100

high-risk

Severity 24/34 · High

Exploitability 5/34 · Minimal

Exposure 22/34 · High