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Vulnerability record · CVE-2007-6422 · published 8 January 2008

CVE-2007-6422: Apache http server vulnerability

Apache · Http Server

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.

4.0 CVSS 2.0 Medium EPSS 10.0% · top 4.6% CWE-399 · CWE-399
4.0CVSS 2.0 base score
10.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
66References
16 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:L/Au:S/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://httpd.apache.org/security/vulnerabilities_22.html
http://lists.opensuse.org/opensuse-security-announce/2008-04/msg00004.html
http://secunia.com/advisories/28526 Vendor Advisory
http://secunia.com/advisories/28749 Vendor Advisory
http://secunia.com/advisories/28977 Vendor Advisory
http://secunia.com/advisories/29348 Vendor Advisory
http://secunia.com/advisories/29640 Vendor Advisory
http://security.gentoo.org/glsa/glsa-200803-19.xml
http://securityreason.com/securityalert/3523
http://www.mandriva.com/security/advisories?name=MDVSA-2008:016
http://www.redhat.com/support/errata/RHSA-2008-0008.html
http://www.redhat.com/support/errata/RHSA-2008-0009.html
http://www.securityfocus.com/archive/1/486169/100/0/threaded
http://www.securityfocus.com/bid/27236
http://www.ubuntu.com/usn/usn-575-1
http://www.vupen.com/english/advisories/2008/0048 Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/39476
https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%
https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%
https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/r7dd6be4dc38148704f2edafb44a8712abaa3a2be120d6c3314d55919%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/r84d043c2115176958562133d96d851495d712aa49da155d81f6733be%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/rc4c53a0d57b2771ecd4b965010580db355e38137c8711311ee1073a8%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10181
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8690
https://www.redhat.com/archives/fedora-package-announce/2008-February/msg00541.html
https://www.redhat.com/archives/fedora-package-announce/2008-February/msg00562.html
http://httpd.apache.org/security/vulnerabilities_22.html
http://lists.opensuse.org/opensuse-security-announce/2008-04/msg00004.html
http://secunia.com/advisories/28526 Vendor Advisory
http://secunia.com/advisories/28749 Vendor Advisory
http://secunia.com/advisories/28977 Vendor Advisory
http://secunia.com/advisories/29348 Vendor Advisory
http://secunia.com/advisories/29640 Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2007-6422), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.