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CVE-2012-4557

Status Candidate

Overview

The mod_proxy_ajp module in the Apache HTTP Server 2.2.12 through 2.2.21 places a worker node into an error state upon detection of a long request-processing time, which allows remote attackers to cause a denial of service (worker consumption) via an expensive request.

Related Files

HP Security Bulletin HPSBUX02893
Posted Jul 3, 2013
Authored by HP | Site hp.com

HP Security Bulletin HPSBUX02893 - Potential security vulnerabilities have been identified with HP-UX Apache running Tomcat Servlet Engine. These vulnerabilities could be exploited remotely to create a Denial of Service (DoS) or to perform Cross Site Scripting (XSS). Revision 1 of this advisory.

tags | advisory, denial of service, vulnerability, xss
systems | hpux
advisories | CVE-2012-2687, CVE-2012-4557
SHA-256 | a026ac31493a39f6f261c4aec7d39803b709c1fe4c6b7c6d2240611c6fa91a58
HP Security Bulletin HPSBUX02866 SSRT101139
Posted Apr 16, 2013
Authored by HP | Site hp.com

HP Security Bulletin HPSBUX02866 SSRT101139 - Potential security vulnerabilities have been identified with HP-UX Running Apache. These vulnerabilities could be exploited remotely to create a Denial of Service (DoS) or to execute arbitrary code and other vulnerabilities. Revision 1 of this advisory.

tags | advisory, denial of service, arbitrary, vulnerability
systems | hpux
advisories | CVE-2007-6750, CVE-2012-2687, CVE-2012-2733, CVE-2012-3499, CVE-2012-3546, CVE-2012-4431, CVE-2012-4534, CVE-2012-4557, CVE-2012-4558, CVE-2012-4929, CVE-2012-5885
SHA-256 | d6c34385da1a0269af4fc2c91e93b32c176acbb9b42ae7cafb46c63ea03bc087
Ubuntu Security Notice USN-1765-1
Posted Mar 19, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1765-1 - Niels Heinen discovered that multiple modules incorrectly sanitized certain strings, which could result in browsers becoming vulnerable to cross-site scripting attacks when processing the output. With cross-site scripting vulnerabilities, if a user were tricked into viewing server output during a crafted server request, a remote attacker could exploit this to modify the contents, or steal confidential data (such as passwords), within the same domain. It was discovered that the mod_proxy_ajp module incorrectly handled error states. A remote attacker could use this issue to cause the server to stop responding, resulting in a denial of service. This issue only applied to Ubuntu 8.04 LTS, Ubuntu 10.04 LTS and Ubuntu 11.10. Various other issues were also addressed.

tags | advisory, remote, denial of service, vulnerability, xss
systems | linux, ubuntu
advisories | CVE-2012-4557, CVE-2013-1048, CVE-2012-3499, CVE-2012-4557, CVE-2012-4558, CVE-2013-1048
SHA-256 | 9767c3ba93f72fe50577dcb192dc592f8756c27311ba9608eac93daa121f26e9
Red Hat Security Advisory 2013-0512-02
Posted Feb 21, 2013
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2013-0512-02 - The httpd packages contain the Apache HTTP Server, which is the namesake project of The Apache Software Foundation. An input sanitization flaw was found in the mod_negotiation Apache HTTP Server module. A remote attacker able to upload or create files with arbitrary names in a directory that has the MultiViews options enabled, could use this flaw to conduct cross-site scripting attacks against users visiting the site. It was discovered that mod_proxy_ajp, when used in configurations with mod_proxy in load balancer mode, would mark a back-end server as failed when request processing timed out, even when a previous AJP CPing request was responded to by the back-end. A remote attacker able to make a back-end use an excessive amount of time to process a request could cause mod_proxy to not send requests to back-end AJP servers for the retry timeout period or until all back-end servers were marked as failed.

tags | advisory, remote, web, arbitrary, xss
systems | linux, redhat
advisories | CVE-2008-0455, CVE-2012-2687, CVE-2012-4557
SHA-256 | f8cfe39b362ad6d9a254f54f9420f1cf47a5d594adaddff4dc75cf932ed837ff
Debian Security Advisory 2579-1
Posted Nov 30, 2012
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2579-1 - A vulnerability has been found in the Apache HTTPD Server.

tags | advisory
systems | linux, debian
advisories | CVE-2012-4557, CVE-2012-4929
SHA-256 | 75cc0f2d9d8dabf15819407aef98d97059d1c26d0754a1dead1d43130c26538d
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