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Apache Xerces-C XML Parser Buffer Overflow

Apache Xerces-C XML Parser Buffer Overflow
Posted Feb 25, 2016
Authored by Gustavo Grieco

The Xerces-C XML parser mishandles certain kinds of malformed input documents, resulting in buffer overflows during processing and error reporting. The overflows can manifest as a segmentation fault or as memory corruption during a parse operation. The bugs allow for a denial of service attack in many applications by an unauthenticated attacker, and could conceivably result in remote code execution. Apache Xerces-C XML Parser library versions prior to 3.1.3 are affected.

tags | advisory, remote, denial of service, overflow, code execution
advisories | CVE-2016-0729
MD5 | 95b957a31bb8598747cd1d57b0e36f7b

Apache Xerces-C XML Parser Buffer Overflow

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Hash: SHA256

CVE-2016-0729: Apache Xerces-C XML Parser Crashes on Malformed Input

Severity: Critical

Vendor: The Apache Software Foundation

Versions Affected: Apache Xerces-C XML Parser library versions
prior to V3.1.3

Description: The Xerces-C XML parser mishandles certain kinds of malformed
input documents, resulting in buffer overlows during processing and error
reporting. The overflows can manifest as a segmentation fault or as memory
corruption during a parse operation. The bugs allow for a denial of service
attack in many applications by an unauthenticated attacker, and could
conceivably result in remote code execution.

Mitigation: Applications that are using library versions older than
V3.1.3 should upgrade as soon as possible. Distributors of older versions
should apply the patches from this subversion revision:

http://svn.apache.org/viewvc?view=revision&revision=1727978

Credit: This issue was reported by Gustavo Grieco.

References:
http://xerces.apache.org/xerces-c/secadv/CVE-2016-0729.txt

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