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CVE-2016-2099

Published: 13 May 2016

Use-after-free vulnerability in validators/DTD/DTDScanner.cpp in Apache Xerces C++ 3.1.3 and earlier allows context-dependent attackers to have unspecified impact via an invalid character in an XML document.

From the Ubuntu Security Team

It was discovered that Xerces-C XML Parser mishandles certain kinds of external DTD references, resulting in a user-after-free. An attacker could use this vulnerability to cause a denial of service (crash) or possibly execute arbitrary code.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
xerces-c
Launchpad, Ubuntu, Debian
artful Not vulnerable
(3.1.3+debian-2)
bionic Not vulnerable
(3.1.3+debian-2)
cosmic Not vulnerable
(3.1.3+debian-2)
disco Not vulnerable
(3.1.3+debian-2)
eoan Not vulnerable
(3.1.3+debian-2)
focal Not vulnerable
(3.1.3+debian-2)
impish Not vulnerable
(3.1.3+debian-2)
jammy Not vulnerable
(3.1.3+debian-2)
precise Ignored
(end of life)
trusty
Released (3.1.1-5.1+deb8u2build0.14.04.1)
upstream Needs triage

wily
Released (3.1.1-5.1+deb8u2build0.15.10.1)
xenial
Released (3.1.3+debian-1ubuntu0.1~esm1)
Available with Ubuntu Pro
yakkety Not vulnerable
(3.1.3+debian-2)
zesty Not vulnerable
(3.1.3+debian-2)
groovy Not vulnerable
(3.1.3+debian-2)
hirsute Not vulnerable
(3.1.3+debian-2)
Patches:
upstream: http://svn.apache.org/viewvc?view=revision&revision=1747619

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H