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TI-2011-02958 Aliases CVE-2011-3348GHSA-vqqq-3xjq-cg84

The mod_proxy_ajp module in the Apache HTTP Server before 2.2.21, when used with…

Priority MEDIUM 40CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Medium
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Partial
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-400.

Summary

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.

Why it matters now

EPSS 0.2238 97th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 3 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*2.2.12 – 2.2.20VulnerableApache
cpe:2.3:a:redhat:jboss_enterprise_web_server:1.0.0:*:*:*:*:*:*:*1.0.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*6.0Running onRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0Running onRed Hat
  • cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* Versions 2.2.12 – 2.2.20 Vulnerable ·Apache
  • cpe:2.3:a:redhat:jboss_enterprise_web_server:1.0.0:*:*:*:*:*:*:* Versions 1.0.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Running on ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Running on ·Red Hat

Remediation

Red Hat 3 advisories

  • RHSA-2012:0543 Released 2012-05-07 · Red Hat rating Moderate
    httpd security and bug fix update
    • Red Hat JBoss Web Server 1.0
  • RHSA-2012:0542 Released 2012-05-07 · Red Hat rating Moderate
    httpd security and bug fix update
    • Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Server httpd-2.2.17-15.4.ep5.el5, httpd-2.2.17-15.4.ep5.el5.i386, httpd-devel-2.2.17-15.4.ep5.el5 +5
    • Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Server httpd-2.2.17-15.4.ep5.el6, httpd-2.2.17-15.4.ep5.el6.i386, httpd-devel-2.2.17-15.4.ep5.el6 +7
  • RHSA-2011:1391 Released 2011-10-20 · Red Hat rating Moderate
    httpd security and bug fix update
    • Red Hat Enterprise Linux Server (v. 6) httpd-2.2.15-9.el6_1.3, httpd-devel-2.2.15-9.el6_1.3, httpd-devel-2.2.15-9.el6_1.3.ppc +3

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2011:1391
Red Hat JBoss Enterprise Web Server 1 for RHEL 5 ServerFixed RHSA-2012:0542
Red Hat JBoss Enterprise Web Server 1 for RHEL 6 ServerFixed RHSA-2012:0542
Red Hat JBoss Web Server 1.0Fixed RHSA-2012:0543
Not affected: 2 products
  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-3348
  2. 2026-10-03 Alias added: GHSA-vqqq-3xjq-cg84

References

Exploit 1

Advisory 12

Other 13

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences