GLSA 200903-19: Xerces-C++: Denial of Service
| Severity: | normal |
| Title: | Xerces-C++: Denial of Service |
| Date: | 03/09/2009 |
| Bugs: | |
| ID: | 200903-19 |
Synopsis
An error in Xerces-C++ allows for a Denial of Service via malicious XML schema files.Background
Xerces-C++ is a validating XML parser written in a portable subset of C++.
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| dev-libs/xerces-c | < 3.0.0-r1 | >= 3.0.0-r1 | All supported architectures |
Description
Frank Rast reported that the XML parser in Xerces-C++ does not correctly handle an XML schema definition with a large maxOccurs value, which triggers excessive memory consumption during the validation of an XML file.
Impact
A remote attacker could entice a user or automated system to validate an XML file using a specially crafted XML schema file, leading to a Denial of Service (stack consumption and crash).
Workaround
There is no known workaround at this time.
Resolution
All Xerces-C++ users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/xerces-c-3.0.0-r1"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.