The balancer_handler function in mod_proxy_balancer in the Apache HTTP Server 2.2.0…
Priority LOW 31CWE-399Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- 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-399 and the CVSS impact.
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.
Why it matters now
EPSS 0.09951 95th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:http_server:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:2.2:*:*:*:*:*:*:* | 2.2 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:2.2.1:*:*:*:*:*:*:* | 2.2.1 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:2.2.2:*:*:*:*:*:*:* | 2.2.2 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:2.2.3:*:*:*:*:*:*:* | 2.2.3 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:2.2.4:*:*:*:*:*:*:* | 2.2.4 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:2.2.6:*:*:*:*:*:*:* | 2.2.6 | Vulnerable | Apache |
- cpe:2.3:a:apache:http_server:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:2.2:*:*:*:*:*:*:* Versions 2.2 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:2.2.1:*:*:*:*:*:*:* Versions 2.2.1 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:2.2.2:*:*:*:*:*:*:* Versions 2.2.2 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:2.2.3:*:*:*:*:*:*:* Versions 2.2.3 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:2.2.4:*:*:*:*:*:*:* Versions 2.2.4 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:2.2.6:*:*:*:*:*:*:* Versions 2.2.6 Vulnerable ·Apache
Remediation
Red Hat 2 advisories
- RHSA-2008:0009 Released 2008-01-21 · Red Hat rating Moderatehttpd security update
- Red Hat Application Stack v2 for Enterprise Linux (v.5) httpd-2.2.4-9.el5s2, httpd-2.2.4-9.el5s2.i386, httpd-devel-2.2.4-9.el5s2 +5
- RHSA-2008:0008 Released 2008-01-15 · Red Hat rating Moderatehttpd security update
- Red Hat Enterprise Linux (v. 5 server) httpd-2.2.3-11.el5_1.3, httpd-2.2.3-11.el5_1.3.i386, httpd-2.2.3-11.el5_1.3.ia64 +13
- Red Hat Enterprise Linux Desktop (v. 5 client) httpd-2.2.3-11.el5_1.3, httpd-2.2.3-11.el5_1.3.i386, mod_ssl-1:2.2.3-11.el5_1.3 +1
- Red Hat Enterprise Linux Desktop Workstation (v. 5 client) httpd-2.2.3-11.el5_1.3, httpd-devel-2.2.3-11.el5_1.3, httpd-devel-2.2.3-11.el5_1.3.i386 +2
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux (v. 5 server) | Fixed | RHSA-2008:0008 |
| Red Hat Enterprise Linux Desktop (v. 5 client) | Fixed | RHSA-2008:0008 |
| Red Hat Enterprise Linux Desktop Workstation (v. 5 client) | Fixed | RHSA-2008:0008 |
Timeline
- 2026-10-02 Threatist record created from CVE-2007-6422
- 2026-10-03 Alias added: GHSA-qmrc-358m-f76x
References
Advisory 10
Other 15
- oval:org.mitre.oval:def:10181
- http://httpd.apache.org/security/vulnerabilities_22.html
- oval:org.mitre.oval:def:8690
- [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.html
- [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.html
- [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.html
- [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.html
- [httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/
- [httpd-cvs] 20210330 svn commit: r1888194 [5/13] - /httpd/site/trunk/content/security/json/
- [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.html
- [httpd-cvs] 20210330 svn commit: r1073139 [5/13] - in /websites/staging/httpd/trunk/content: ./ security/json/
- [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.html
- [httpd-cvs] 20210330 svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/
- [httpd-cvs] 20210330 svn commit: r1073149 [6/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/
- [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.html
More Apache Http Server vulnerabilities
- TI-2021-18535 Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773) KEVCVSS 3.1CRITICAL 9.8
- TI-2021-18417 Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49 KEVCVSS 3.1CRITICAL 9.8
- TI-2024-25716 Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path. KEVCVSS 3.1CRITICAL 9.1
- TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
- TI-2019-00184 Use after free in Apache HTTP Server KEVCVSS 3.1HIGH 7.8
- TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2007-6422 · CVE Program
- CVE-2007-6422 · NVD
- FIRST EPSS
- GHSA-qmrc-358m-f76x · GitHub Advisory Database · CC BY 4.0
- CVE-2007-6422 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences