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."

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Advisories
Source ID Title
EUVD EUVD EUVD-2007-3294 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."
Ubuntu USN Ubuntu USN USN-499-1 Apache vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

References
Link Providers
ftp://patches.sgi.com/support/free/security/advisories/20070701-01-P.asc cve-icon cve-icon
http://bugs.gentoo.org/show_bug.cgi?id=186219 cve-icon cve-icon
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=245111 cve-icon cve-icon
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01182588 cve-icon cve-icon
http://httpd.apache.org/security/vulnerabilities_13.html cve-icon cve-icon
http://httpd.apache.org/security/vulnerabilities_20.html cve-icon cve-icon
http://httpd.apache.org/security/vulnerabilities_22.html cve-icon cve-icon
http://lists.vmware.com/pipermail/security-announce/2009/000062.html cve-icon cve-icon
http://mail-archives.apache.org/mod_mbox/httpd-dev/200706.mbox/%3c20070629141032.GA15192%40redhat.com%3e cve-icon cve-icon
http://marc.info/?l=apache-httpd-dev&m=118252946632447&w=2 cve-icon cve-icon
http://osvdb.org/38939 cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2007-0556.html cve-icon cve-icon
http://secunia.com/advisories/25827 cve-icon cve-icon
http://secunia.com/advisories/25830 cve-icon cve-icon
http://secunia.com/advisories/25920 cve-icon cve-icon
http://secunia.com/advisories/26211 cve-icon cve-icon
http://secunia.com/advisories/26273 cve-icon cve-icon
http://secunia.com/advisories/26443 cve-icon cve-icon
http://secunia.com/advisories/26508 cve-icon cve-icon
http://secunia.com/advisories/26611 cve-icon cve-icon
http://secunia.com/advisories/26759 cve-icon cve-icon
http://secunia.com/advisories/26790 cve-icon cve-icon
http://secunia.com/advisories/26822 cve-icon cve-icon
http://secunia.com/advisories/26842 cve-icon cve-icon
http://secunia.com/advisories/26993 cve-icon cve-icon
http://secunia.com/advisories/27121 cve-icon cve-icon
http://secunia.com/advisories/27209 cve-icon cve-icon
http://secunia.com/advisories/27563 cve-icon cve-icon
http://secunia.com/advisories/27732 cve-icon cve-icon
http://secunia.com/advisories/28212 cve-icon cve-icon
http://secunia.com/advisories/28224 cve-icon cve-icon
http://secunia.com/advisories/28606 cve-icon cve-icon
http://security.gentoo.org/glsa/glsa-200711-06.xml cve-icon cve-icon
http://security.psnc.pl/files/apache_report.pdf cve-icon cve-icon
http://securityreason.com/securityalert/2814 cve-icon cve-icon
http://sunsolve.sun.com/search/document.do?assetkey=1-26-103179-1 cve-icon cve-icon
http://sunsolve.sun.com/search/document.do?assetkey=1-66-200032-1 cve-icon cve-icon
http://support.avaya.com/elmodocs2/security/ASA-2007-353.htm cve-icon cve-icon
http://support.avaya.com/elmodocs2/security/ASA-2007-363.htm cve-icon cve-icon
http://svn.apache.org/viewvc?view=rev&revision=547987 cve-icon cve-icon
http://www-1.ibm.com/support/docview.wss?uid=swg1PK52702 cve-icon cve-icon
http://www-1.ibm.com/support/docview.wss?uid=swg1PK53984 cve-icon cve-icon
http://www-1.ibm.com/support/search.wss?rs=0&q=PK50467&apar=only cve-icon cve-icon
http://www.fujitsu.com/global/support/software/security/products-f/interstage-200802e.html cve-icon cve-icon
http://www.mandriva.com/security/advisories?name=MDKSA-2007:140 cve-icon cve-icon
http://www.mandriva.com/security/advisories?name=MDKSA-2007:142 cve-icon cve-icon
http://www.novell.com/linux/security/advisories/2007_61_apache2.html cve-icon cve-icon
http://www.redhat.com/archives/fedora-package-announce/2007-September/msg00320.html cve-icon cve-icon
http://www.redhat.com/errata/RHSA-2007-0532.html cve-icon cve-icon
http://www.redhat.com/support/errata/RHSA-2007-0557.html cve-icon cve-icon
http://www.redhat.com/support/errata/RHSA-2007-0662.html cve-icon cve-icon
http://www.redhat.com/support/errata/RHSA-2008-0261.html cve-icon cve-icon
http://www.securityfocus.com/archive/1/469899/100/0/threaded cve-icon cve-icon
http://www.securityfocus.com/archive/1/471832/100/0/threaded cve-icon cve-icon
http://www.securityfocus.com/archive/1/505990/100/0/threaded cve-icon cve-icon
http://www.securityfocus.com/bid/24215 cve-icon cve-icon
http://www.securitytracker.com/id?1018304 cve-icon cve-icon
http://www.trustix.org/errata/2007/0026/ cve-icon cve-icon
http://www.ubuntu.com/usn/usn-499-1 cve-icon cve-icon
http://www.vupen.com/english/advisories/2007/2727 cve-icon cve-icon
http://www.vupen.com/english/advisories/2007/3100 cve-icon cve-icon
http://www.vupen.com/english/advisories/2007/3283 cve-icon cve-icon
http://www.vupen.com/english/advisories/2007/3420 cve-icon cve-icon
http://www.vupen.com/english/advisories/2007/3494 cve-icon cve-icon
http://www.vupen.com/english/advisories/2007/4305 cve-icon cve-icon
http://www.vupen.com/english/advisories/2008/0233 cve-icon cve-icon
https://exchange.xforce.ibmcloud.com/vulnerabilities/35095 cve-icon cve-icon
https://issues.rpath.com/browse/RPL-1710 cve-icon cve-icon
https://lists.apache.org/thread.html/54a42d4b01968df1117cea77fc53d6beb931c0e05936ad02af93e9ac%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/5df9bfb86a3b054bb985a45ff9250b0332c9ecc181eec232489e7f79%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r0276683d8e1e07153fc8642618830ac0ade85b9ae0dc7b07f63bb8fc%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r2cb985de917e7da0848c440535f65a247754db8b2154a10089e4247b%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r476d175be0aaf4a17680ef98c5153b4d336eaef76fb2224cc94c463a%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r5419c9ba0951ef73a655362403d12bb8d10fab38274deb3f005816f5%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r5f9c22f9c28adbd9f00556059edc7b03a5d5bb71d4bb80257c0d34e4%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r652fc951306cdeca5a276e2021a34878a76695a9f3cfb6490b4a6840%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r8828e649175df56f1f9e3919938ac7826128525426e2748f0ab62feb%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r9e8622254184645bc963a1d47c5d47f6d5a36d6f080d8d2c43b2b142%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rad01d817195e6cc871cb1d73b207ca326379a20a6e7f30febaf56d24%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rafd145ba6cd0a4ced113a5823cdaff45aeb36eb09855b216401c66d6%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rb9c9f42dafa25d2f669dac2a536a03f2575bc5ec1be6f480618aee10%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/reb542d2038e9c331506e0cbff881b47e40fbe2bd93ff00979e60cdf7%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2007-3304 cve-icon
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11589 cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2007-3304 cve-icon
History

Tue, 15 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00134}

epss

{'score': 0.00126}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-07T14:14:12.838Z

Reserved: 2007-06-20T00:00:00

Link: CVE-2007-3304

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2007-06-20T22:30:00.000

Modified: 2025-04-09T00:30:58.490

Link: CVE-2007-3304

cve-icon Redhat

Severity : Moderate

Publid Date: 2007-06-19T00:00:00Z

Links: CVE-2007-3304 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses