Unrated severityNVD Advisory· Published Sep 20, 2011· Updated Jun 16, 2026
CVE-2011-3348
CVE-2011-3348
Description
The mod_proxy_ajp module in the Apache HTTP Server before 2.2.21, when used with mod_proxy_balancer in certain configurations, allows remote attackers to cause a denial of service (temporary "error state" in the backend server) via a malformed HTTP request.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*range: >=2.2.12,<=2.2.20
- (no CPE)range: <2.2.21
- cpe:2.3:a:redhat:jboss_enterprise_web_server:1.0.0:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
30- community.jboss.org/message/625307nvdExploitThird Party Advisory
- httpd.apache.org/security/vulnerabilities_22.htmlnvdVendor Advisory
- marc.infonvdIssue TrackingMailing ListThird Party Advisory
- marc.infonvdIssue TrackingMailing ListThird Party Advisory
- rhn.redhat.com/errata/RHSA-2012-0542.htmlnvdThird Party Advisory
- rhn.redhat.com/errata/RHSA-2012-0543.htmlnvdThird Party Advisory
- secunia.com/advisories/46013nvdNot ApplicableVendor Advisory
- support.apple.com/kb/HT5130nvdThird Party Advisory
- www.oracle.com/technetwork/topics/security/cpujuly2013-1899826.htmlnvdThird Party Advisory
- www.redhat.com/support/errata/RHSA-2011-1391.htmlnvdThird Party Advisory
- www.securityfocus.com/bid/49616nvdThird Party AdvisoryVDB Entry
- www.securitytracker.com/idnvdBroken LinkThird Party AdvisoryVDB Entry
- exchange.xforce.ibmcloud.com/vulnerabilities/69804nvdThird Party AdvisoryVDB Entry
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14941nvdThird Party Advisory
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18154nvdThird Party Advisory
- lists.apple.com/archives/security-announce/2012/Feb/msg00000.htmlnvdBroken LinkMailing List
- www.apache.org/dist/httpd/Announcement2.2.htmlnvdBroken Link
- www.mandriva.com/security/advisoriesnvdBroken Link
- lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/r1d201e3da31a2c8aa870c8314623caef7debd74a13d0f25205e26f15%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/r688df6f16f141e966a0a47f817e559312b3da27886f59116a94b273d%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/re2e23465bbdb17ffe109d21b4f192e6b58221cd7aa8797d530b4cd75%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3Envd
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