Arch Linux Security Advisory ASA-201606-22
=========================================
Severity: Critical
Date    : 2016-06-25
CVE-ID  : CVE-2016-2099
Package : xerces-c
Type    : arbitrary code execution
Remote  : Yes
Link    : https://wiki.archlinux.org/title/CVE

Summary
======
The package xerces-c before version 3.1.3-2 is vulnerable to arbitrary
code execution.

Resolution
=========
Upgrade to 3.1.3-2.

# pacman -Syu "xerces-c>=3.1.3-2"

The problem has been fixed upstream in version 3.1.3.

Workaround
=========
None.

Description
==========
The DTDScanner fails to account for the fact that peeking characters in
the XMLReader class can raise an exception if an invalid character is
encountered, and the exception crosses stack frames in an unsafe way
that causes a higher level exception handler to access an already-freed
object.

Impact
=====
A remote attacker might be able to cause a denial of service or execute
arbitrary code on the affected host by submitting a crafted DTD file.

References
=========
https://bugs.archlinux.org/task/49353
https://issues.apache.org/jira/browse/XERCESC-2066
https://www.openwall.com/lists/oss-security/2016/05/09/7
https://access.redhat.com/security/cve/CVE-2016-2099

ArchLinux: 201606-22: xerces-c: arbitrary code execution

June 25, 2016

Summary

The DTDScanner fails to account for the fact that peeking characters in the XMLReader class can raise an exception if an invalid character is encountered, and the exception crosses stack frames in an unsafe way that causes a higher level exception handler to access an already-freed object.

Resolution

Upgrade to 3.1.3-2. # pacman -Syu "xerces-c>=3.1.3-2"
The problem has been fixed upstream in version 3.1.3.

References

https://bugs.archlinux.org/task/49353 https://issues.apache.org/jira/browse/XERCESC-2066 https://www.openwall.com/lists/oss-security/2016/05/09/7 https://access.redhat.com/security/cve/CVE-2016-2099

Severity
Package : xerces-c
Type : arbitrary code execution
Remote : Yes
Link : https://wiki.archlinux.org/title/CVE

Workaround

None.

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