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Fencer Vulns
medium 4.0

CVE-2007-6422 json

The balancer_handler function in mod_proxy_balancer in the Apache HTTP Server 2.2.0 through 2.2.6, when a threaded Multi-Processing Module…

published 2008-01-08 18 y ago modified 2026-06-16 4 mo ago also EUVD-2007-6388

cvss
4.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
10.0%
EPSS 10.0% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

The balancer_handler function in mod_proxy_balancer in the Apache HTTP Server 2.2.0 through 2.2.6, when a threaded Multi-Processing Module is used, allows remote authenticated users to cause a denial of service (child process crash) via an invalid bb variable.

Patch / fix

  • apache http_server 2.2.8
  • apache2 Debian 14, Debian 13, Debian 12 2.2.8-1

debian advisories DEBIAN-CVE-2007-6422

  • httpd RHEL 2 APPLICATION_STACK 2.2.4-9.el5s2
  • mod_ssl RHEL 2 APPLICATION_STACK 1:2.2.4-9.el5s2
  • httpd-manual RHEL 2 APPLICATION_STACK 2.2.4-9.el5s2
  • httpd RHEL 5 2.2.3-11.el5_1.3
  • mod_ssl RHEL 5 1:2.2.3-11.el5_1.3
  • httpd-manual RHEL 5 2.2.3-11.el5_1.3

red hat advisories RHSA-2008:0009RHSA-2008:0008

  • apache2 openSUSE Tumbleweed 2.4.49-1.1

opensuse advisories openSUSE-SU-2024:10623-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2007-6422 updated

httpd mod_proxy_balancer crash

  • Red Hat Enterprise Linux (v. 5 server) httpd 2.2.3-11.el5_1.3, mod_ssl 2.2.3-11.el5_1.3, httpd-manual 2.2.3-11.el5_1.3 Red Hat Enterprise Linux Desktop (v. 5 client) httpd 2.2.3-11.el5_1.3, mod_ssl 2.2.3-11.el5_1.3, httpd-manual 2.2.3-11.el5_1.3 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) httpd 2.2.3-11.el5_1.3, mod_ssl 2.2.3-11.el5_1.3, httpd-manual 2.2.3-11.el5_1.3
    fixed: vendor fix RHSA-2008:0008

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

9.95% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:N/A:P

Classification

Weakness
  • CWE-399 Resource Management Errors
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Add accurate affected ranges.