Apache HTTP Server 2.2.19 Released
The Apache Software Foundation and the Apache HTTP Server Project are
pleased to announce the release of version 2.2.19 of the Apache HTTP
Server ("Apache"). This version of Apache is principally a bug fix
release, correcting regressions in the httpd 2.2.18 package; the use
of that previous 2.2.18 package is discouraged due to these flaws:
* SECURITY: CVE-2011-1928 (cve.mitre.org)
A fix in bundled APR 1.4.4 apr_fnmatch() to address CVE-2011-0419
introduced a new vulnerability. httpd workers enter a hung state
(100% cpu utilization) after updating to APR 1.4.4. Upgrading to
APR 1.4.5 bundled with the httpd 2.2.19 package, or using APR 1.4.3
or prior with the 'IgnoreClient' option of the 'IndexOptions'
directive will circumvent both issues.
* httpd 2.2.18: The ap_unescape_url_keep2f() function signature was
inadvertantly changed. This breaks binary compatibility of a number
of third-party modules. This httpd-2.2.19 package restores the
function signature provided by 2.2.17 and prior.
We consider this release to be the best version of Apache available, and
encourage users of all prior versions to upgrade.
Apache HTTP Server 2.2.19 is available for download from:
http://httpd.apache.org/download.cgi
Please see the CHANGES_2.2 file, linked from the download page, for a
full list of changes. A condensed list, CHANGES_2.2.19 provides the
complete list of changes since 2.2.18. A summary of all of the security
vulnerabilities addressed in this and earlier releases is available:
http://httpd.apache.org/security/vulnerabilities_22.html
This release includes the Apache Portable Runtime (APR) version 1.4.5
and APR Utility Library (APR-util) version 1.3.12, bundled with the tar
and zip distributions. The APR libraries libapr and libaprutil (and
on Win32, libapriconv version 1.2.1) must all be updated to ensure
binary compatibility and address many known security and platform bugs.
Apache 2.2 offers numerous enhancements, improvements, and performance
boosts over the 2.0 codebase. For an overview of new features
introduced since 2.0 please see:
http://httpd.apache.org/docs/2.2/new_features_2_2.html
This release builds on and extends the Apache 2.0 API. Modules written
for Apache 2.0 will need to be recompiled in order to run with Apache
2.2, and require minimal or no source code changes.
http://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x/VERSIONING
When upgrading or installing this version of Apache, please bear in mind
that if you intend to use Apache with one of the threaded MPMs (other
than the Prefork MPM), you must ensure that any modules you will be
using (and the libraries they depend on) are thread-safe.
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