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CVE-2016-1839

Published: 20 May 2016

The xmlDictAddString 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 cause a denial of service (heap-based buffer over-read) via a crafted XML document.

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
libxml2
Launchpad, Ubuntu, Debian
precise
Released (2.7.8.dfsg-5.1ubuntu4.15)
trusty
Released (2.9.1+dfsg1-3ubuntu4.8)
upstream
Released (2.9.4)
wily
Released (2.9.2+zdfsg1-4ubuntu0.4)
xenial
Released (2.9.3+dfsg1-1ubuntu0.1)
yakkety Not vulnerable
(2.9.3+dfsg1-1.2)
zesty Not vulnerable
(2.9.3+dfsg1-1.2)
Patches:
upstream: https://git.gnome.org/browse/libxml2/commit/?id=a820dbeac29d330bae4be05d9ecd939ad6b4aa33

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H