CVE-2016-1837

moderate-risk

Published 2016-05-20

Multiple use-after-free vulnerabilities in the (1) htmlPArsePubidLiteral and (2) htmlParseSystemiteral functions 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, allow remote attackers to cause a denial of service via a crafted XML document.

Do I need to act?

0.78% chance of exploitation

EPSS score — low 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 5.5/10 Medium

LOCAL / LOW complexity

Affected Products (20)

Ubuntu Linux

Debian Linux

Iphone Os

Mac Os X

Tvos

Watchos

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 (44)

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/bulletinjul2016-3090568.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=760263

Patch https://git.gnome.org/browse/libxml2/commit/?id=11ed4a7a90d5ce156a18980a4ad4e53e...

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

and 24 more references

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moderate-risk

Severity 18/34 · Moderate

Exploitability 3/34 · Minimal

Exposure 22/34 · High