high
7.1
CWE
400
Advisory Published
CVE Published
Updated

CVE-2009-1891

First published: Wed Jul 01 2009(Updated: )

François Guerraz reported in Debian BTS a possible DoS (CPU consumption) a DoS with mod_deflate since it does not stop to compress large files even after the network connection has been closed. This allows to use large amounts of CPU if there is a largish file available that has mod_deflate enabled. Original report: <a href="http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=534712">http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=534712</a> Post to the apache-httpd-dev mailing list: <a href="http://marc.info/?l=apache-httpd-dev&amp;m=124621326524824&amp;w=2">http://marc.info/?l=apache-httpd-dev&amp;m=124621326524824&amp;w=2</a>

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Apache Http Server>=2.0.35<2.0.64
Apache Http Server>=2.2.0<2.2.12
Debian=4.0
Debian=5.0
Debian=6.0
Fedora=11
Ubuntu=6.06
Ubuntu=8.04
Ubuntu=8.10
Ubuntu=9.04
redhat enterprise Linux desktop=5.0
redhat enterprise Linux eus=5.3
redhat enterprise Linux server=5.0
redhat enterprise Linux server aus=5.3
redhat enterprise Linux workstation=5.0

Remedy

http://www.mandriva.com/security/advisories?name=MDVSA-2009:149

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=509125

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2009-1891?

    CVE-2009-1891 is classified as a denial of service (DoS) vulnerability due to excessive CPU consumption.

  • How do I fix CVE-2009-1891?

    To mitigate CVE-2009-1891, it is recommended to upgrade Apache HTTP Server to a version beyond 2.0.64 or 2.2.12.

  • What versions of Apache HTTP Server are affected by CVE-2009-1891?

    CVE-2009-1891 affects Apache HTTP Server versions between 2.0.35 and 2.0.64, as well as 2.2.0 to 2.2.12.

  • Can CVE-2009-1891 be exploited on Debian systems?

    Yes, CVE-2009-1891 can be exploited on Debian systems running affected versions of the Apache HTTP Server.

  • Is CVE-2009-1891 specific to certain operating systems?

    CVE-2009-1891 primarily affects Apache HTTP Server installations on Debian, Fedora, and Ubuntu operating systems.

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