CVE-2011-3348
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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 22.38% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 97.4% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2011-09-19 15:00Z15 YR AGO
- Last updated
- 2024-08-06 23:29Z2 YR AGO
- Reserved
- 2011-08-30
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-400Uncontrolled Resource ConsumptionClass
- Data version
- 5.1
- Document digest
- c91c752b3fc109e7e14830cd3e9260d91ff09c2402b1908cf216a2c010b0e6c8
05 Affected products
06 References
- marc.infoHPSBUX02707http://marc.info/?l=bugtraq&m=131731002122529&w=2
- exchange.xforce.ibmcloud.comapache-modproxyajp-dos(69804)https://exchange.xforce.ibmcloud.com/vulnerabilities/69804
- support.apple.comhttp://support.apple.com/kb/HT5130
- www.redhat.comRHSA-2011:1391http://www.redhat.com/support/errata/RHSA-2011-1391.html
- oval.cisecurity.orgoval:org.mitre.oval:def:14941https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14941
- rhn.redhat.comRHSA-2012:0543http://rhn.redhat.com/errata/RHSA-2012-0543.html
- marc.infoSSRT100619http://marc.info/?l=bugtraq&m=132033751509019&w=2
- www.oracle.comhttp://www.oracle.com/technetwork/topics/security/cpujuly2013-1899826.html
- www.mandriva.comMDVSA-2011:168http://www.mandriva.com/security/advisories?name=MDVSA-2011:168
- lists.apple.comAPPLE-SA-2012-02-01-1http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html
- community.jboss.orghttp://community.jboss.org/message/625307
- www.securityfocus.com49616http://www.securityfocus.com/bid/49616
- rhn.redhat.comRHSA-2012:0542http://rhn.redhat.com/errata/RHSA-2012-0542.html
- www.apache.orghttp://www.apache.org/dist/httpd/Announcement2.2.html
- httpd.apache.orghttp://httpd.apache.org/security/vulnerabilities_22.html#2.2.21
- www.securitytracker.com1026054http://www.securitytracker.com/id?1026054
- oval.cisecurity.orgoval:org.mitre.oval:def:18154https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18154
- secunia.com46013http://secunia.com/advisories/46013
- lists.apache.org[httpd-cvs] 20190815 svn commit: r1048743 [3/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.htmlhttps://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20190815 svn commit: r1048742 [3/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.htmlhttps://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20200401 svn commit: r1058586 [3/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.htmlhttps://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20200401 svn commit: r1058587 [3/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.htmlhttps://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210330 svn commit: r1073140 [3/4] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.htmlhttps://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210330 svn commit: r1888194 [7/13] - /httpd/site/trunk/content/security/json/https://lists.apache.org/thread.html/r688df6f16f141e966a0a47f817e559312b3da27886f59116a94b273d%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210330 svn commit: r1073139 [7/13] - in /websites/staging/httpd/trunk/content: ./ security/json/https://lists.apache.org/thread.html/re2e23465bbdb17ffe109d21b4f192e6b58221cd7aa8797d530b4cd75%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210330 svn commit: r1073149 [8/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/https://lists.apache.org/thread.html/r1d201e3da31a2c8aa870c8314623caef7debd74a13d0f25205e26f15%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210330 svn commit: r1073146 [2/3] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities-httpd.xml security/vulnerabilities_22.html security/vulnerabilities_24.htmlhttps://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210330 svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210606 svn commit: r1075470 [3/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.htmlhttps://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E
07 Fixed in
Debian 12
- apache2 Fixed in 2.2.21-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- apache2 Fixed in 2.2.21-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- apache2 Fixed in 2.2.21-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.