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| <document> |
| <properties> |
| <title>Commons Compress Security Reports</title> |
| <author email="dev@commons.apache.org">Commons Documentation Team</author> |
| </properties> |
| <body> |
| <section name="General Information"> |
| <p>For information about reporting or asking questions about |
| security problems, please see the <a |
| href="http://commons.apache.org/security.html">security page |
| of the Commons project</a>.</p> |
| </section> |
| |
| <section name="Apache Commons Compress Security Vulnerabilities"> |
| <p>This page lists all security vulnerabilities fixed in |
| released versions of Apache Commons Compress. Each |
| vulnerability is given a security impact rating by the |
| development team - please note that this rating may vary from |
| platform to platform. We also list the versions of Commons |
| Compress the flaw is known to affect, and where a flaw has not |
| been verified list the version with a question mark.</p> |
| |
| <p>Please note that binary patches are never provided. If you |
| need to apply a source code patch, use the building |
| instructions for the Commons Compress version that you are |
| using.</p> |
| |
| <p>If you need help on building Commons Compress or other help |
| on following the instructions to mitigate the known |
| vulnerabilities listed here, please send your questions to the |
| public <a href="mail-lists.html">Compress Users mailing |
| list</a>.</p> |
| |
| <p>If you have encountered an unlisted security vulnerability |
| or other unexpected behaviour that has security impact, or if |
| the descriptions here are incomplete, please report them |
| privately to the Apache Security Team. Thank you.</p> |
| |
| <subsection name="Fixed in Apache Commons Compress 1.4.1"> |
| <p><b>Low: Denial of Service</b> <a |
| href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2098">CVE-2012-2098</a></p> |
| |
| <p>The bzip2 compressing streams in Apache Commons Compress |
| internally use sorting algorithms with unacceptable |
| worst-case performance on very repetitive inputs. A |
| specially crafted input to Compress' |
| <code>BZip2CompressorOutputStream</code> can be used to make |
| the process spend a very long time while using up all |
| available processing time effectively leading to a denial of |
| service.</p> |
| |
| <p>This was fixed in revisions |
| <a href="http://svn.apache.org/viewvc?view=revision&revision=1332540">1332540</a>, |
| <a href="http://svn.apache.org/viewvc?view=revision&revision=1332552">1332552</a>, |
| <a href="http://svn.apache.org/viewvc?view=revision&revision=1333522">1333522</a>, |
| <a href="http://svn.apache.org/viewvc?view=revision&revision=1337444">1337444</a>, |
| <a href="http://svn.apache.org/viewvc?view=revision&revision=1340715">1340715</a>, |
| <a href="http://svn.apache.org/viewvc?view=revision&revision=1340723">1340723</a>, |
| <a href="http://svn.apache.org/viewvc?view=revision&revision=1340757">1340757</a>, |
| <a href="http://svn.apache.org/viewvc?view=revision&revision=1340786">1340786</a>, |
| <a href="http://svn.apache.org/viewvc?view=revision&revision=1340787">1340787</a>, |
| <a href="http://svn.apache.org/viewvc?view=revision&revision=1340790">1340790</a>, |
| <a href="http://svn.apache.org/viewvc?view=revision&revision=1340795">1340795</a> and |
| <a href="http://svn.apache.org/viewvc?view=revision&revision=1340799">1340799</a>.</p> |
| |
| <p>This was first reported to the Security Team on 12 April |
| 2012 and made public on 23 May 2012.</p> |
| |
| <p>Affects: 1.0 - 1.4</p> |
| |
| </subsection> |
| </section> |
| |
| <section name="Errors and Ommissions"> |
| <p>Please report any errors or omissions to <a |
| href="mail-lists.html">the dev mailing list</a>.</p> |
| </section> |
| </body> |
| </document> |
