Vulnerability CVE-2009-1891
Published: 2009-07-10   Modified: 2012-02-13

Description:
The mod_deflate module in Apache httpd 2.2.11 and earlier compresses large files until completion even after the associated network connection is closed, which allows remote attackers to cause a denial of service (CPU consumption).

See advisories in our WLB2 database:
Topic
Author
Date
Low
Apache (mod_deflate) Denial of Service Vulnerability
Franois Guerraz
12.07.2009

Type:

CWE-399

 (Resource Management Errors)

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:N/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.1/10
6.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Complete
Affected software
Apache -> Http server 

 References:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=534712
http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00006.html
http://marc.info/?l=apache-httpd-dev&m=124621326524824&w=2
http://marc.info/?l=apache-httpd-dev&m=124661528519546&w=2
http://marc.info/?l=bugtraq&m=129190899612998&w=2
http://marc.info/?l=bugtraq&m=130497311408250&w=2
http://security.gentoo.org/glsa/glsa-200907-04.xml
http://support.apple.com/kb/HT3937
http://wiki.rpath.com/Advisories:rPSA-2009-0142
http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0142
http://www-01.ibm.com/support/docview.wss?uid=swg1PK91361
http://www-01.ibm.com/support/docview.wss?uid=swg1PK99480
http://www.debian.org/security/2009/dsa-1834
http://www.mandriva.com/security/advisories?name=MDVSA-2009:149
http://www.redhat.com/support/errata/RHSA-2009-1156.html
http://www.securityfocus.com/archive/1/507857/100/0/threaded
http://www.securitytracker.com/id?1022529
http://www.ubuntu.com/usn/USN-802-1
http://www.vupen.com/english/advisories/2009/1841
http://www.vupen.com/english/advisories/2009/3184
https://bugzilla.redhat.com/show_bug.cgi?id=509125
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12361
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8632
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9248
https://rhn.redhat.com/errata/RHSA-2009-1148.html
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01363.html
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