CVE-2007-3304
Apache httpd 1.3.37, 2.0.59, and 2.2.4 with the Prefork MPM module, allows local users to cause a denial of service by modifying the worker_score and process_score arrays to reference an arbitrary process ID, which is sent a SIGUSR1 signal from the master process, aka "SIGUSR1 killer."
Key facts
- CVSS score
- 4.7 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:L/AC:M/Au:N/C:N/I:N/A:C- EPSS score
- 3.3% (89th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2007-3294)
- Published
- June 20, 2007
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2007-3294 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- apache / http server
- canonical / ubuntu linux
- canonical / ubuntu linux
- canonical / ubuntu linux
- fedoraproject / fedora
- redhat / enterprise linux desktop
- redhat / enterprise linux server
- redhat / enterprise linux workstation
Certified products that may be affected
1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.
- Red Hat Enterprise Linux 5 OpenSSH-Server Cryptographic Module - Red Hat®, Inc. - FIPS 140 1384 - historical
References
- ftp://patches.sgi.com/support/free/security/advisories/20070701-01-P.asc(Broken Link)
- http://bugs.gentoo.org/show_bug.cgi?id=186219(Issue Tracking, Third Party Advisory)
- http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=245111(Issue Tracking, Third Party Advisory)
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01182588(Third Party Advisory)
- http://httpd.apache.org/security/vulnerabilities_13.html(Vendor Advisory)
- http://httpd.apache.org/security/vulnerabilities_20.html(Vendor Advisory)
- http://httpd.apache.org/security/vulnerabilities_22.html(Vendor Advisory)
- http://lists.vmware.com/pipermail/security-announce/2009/000062.html(Mailing List, Third Party Advisory)
- http://mail-archives.apache.org/mod_mbox/httpd-dev/200706.mbox/%3c20070629141032.GA15192%40redhat.com%3e
- http://marc.info/?l=apache-httpd-dev&m=118252946632447&w=2(Issue Tracking, Mailing List, Third Party Advisory)
- http://osvdb.org/38939(Broken Link)
- http://rhn.redhat.com/errata/RHSA-2007-0556.html(Third Party Advisory)
- http://secunia.com/advisories/25827(Not Applicable, Vendor Advisory)
- http://secunia.com/advisories/25830(Not Applicable, Vendor Advisory)
- http://secunia.com/advisories/25920(Not Applicable, Vendor Advisory)
- http://secunia.com/advisories/26211(Not Applicable, Vendor Advisory)
- http://secunia.com/advisories/26273(Not Applicable, Vendor Advisory)
- http://secunia.com/advisories/26443(Not Applicable, Vendor Advisory)
- http://secunia.com/advisories/26508(Not Applicable, Vendor Advisory)
- http://secunia.com/advisories/26611(Not Applicable, Vendor Advisory)
- http://secunia.com/advisories/26759(Not Applicable, Vendor Advisory)
- http://secunia.com/advisories/26790(Not Applicable, Vendor Advisory)
- http://secunia.com/advisories/26822(Not Applicable, Vendor Advisory)
- http://secunia.com/advisories/26842(Not Applicable, Vendor Advisory)
- http://secunia.com/advisories/26993(Not Applicable, Vendor Advisory)
- http://secunia.com/advisories/27121(Not Applicable)
- http://secunia.com/advisories/27209(Not Applicable)
- http://secunia.com/advisories/27563(Not Applicable)
- http://secunia.com/advisories/27732(Not Applicable)
- http://secunia.com/advisories/28212(Not Applicable)
- http://secunia.com/advisories/28224(Not Applicable)
- http://secunia.com/advisories/28606(Not Applicable)
- http://security.gentoo.org/glsa/glsa-200711-06.xml(Third Party Advisory)
- http://security.psnc.pl/files/apache_report.pdf(Third Party Advisory)
- http://securityreason.com/securityalert/2814(Exploit, Third Party Advisory)
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-103179-1(Broken Link)
- http://sunsolve.sun.com/search/document.do?assetkey=1-66-200032-1(Broken Link)
- http://support.avaya.com/elmodocs2/security/ASA-2007-353.htm(Third Party Advisory)
- http://support.avaya.com/elmodocs2/security/ASA-2007-363.htm(Third Party Advisory)
- http://svn.apache.org/viewvc?view=rev&revision=547987(Third Party Advisory)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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