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AUSCERT External Security Bulletin Redistribution
ESB-2018.0943
xerces-c security update
3 April 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: xerces-c
Publisher: Debian
Operating System: Debian GNU/Linux 7
UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-12627
Original Bulletin:
https://lists.debian.org/debian-lts-announce/2018/03/msg00032.html
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running xerces-c check for an updated version of the software for
their operating system.
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Package : xerces-c
Version : 3.1.1-3+deb7u5
CVE ID : CVE-2017-12627
Debian Bug : 894050
Alberto Garcia, Francisco Oca and Suleman Ali of Offensive Research
discovered that the Xerces-C XML parser mishandles certain kinds of
external DTD references, resulting in dereference of a NULL pointer
while processing the path to the DTD. The bug allows for a denial of
service attack in applications that allow DTD processing and do not
prevent external DTD usage, and could conceivably result in remote code
execution.
For Debian 7 "Wheezy", these problems have been fixed in version
3.1.1-3+deb7u5.
We recommend that you upgrade your xerces-c packages.
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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