CVE-2009-1891

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Summary

CVECVE-2009-1891
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2009-07-10 15:30:00 UTC
Updated2026-04-23 00:35:47 UTC
DescriptionThe 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).

Risk And Classification

Primary CVSS: v2.0 7.1 from [email protected]

AV:N/AC:M/Au:N/C:N/I:N/A:C

Problem Types: CWE-400 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

AV:N/AC:M/Au:N/C:N/I:N/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Apache Http Server All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
rhn.redhat.com | Red Hat Support af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com Third Party Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
'Re: mod_deflate DoS' - MARC af854a3a-2127-422b-91ae-364da2661108 marc.info Issue Tracking, Mailing List, Third Party Advisory
Repository / Oval Repository af854a3a-2127-422b-91ae-364da2661108 oval.cisecurity.org Third Party Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Gentoo update for apache - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Not Applicable, Vendor Advisory
Gentoo Linux Documentation -- Apache: Multiple vulnerabilities af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
'[security bulletin] HPSBOV02683 SSRT090208 rev.1 - HP Secure Web Server (SWS) for OpenVMS running Ap' - MARC af854a3a-2127-422b-91ae-364da2661108 marc.info Issue Tracking, Mailing List, Third Party Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
IBM WebSphere Application Server for z/OS Multiple Vulnerabilities - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Not Applicable, Vendor Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
USN-802-1: Apache vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Third Party Advisory
[security-announce] SUSE Security Announcement: Apache and libapr (SUSE- af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Mailing List, Third Party Advisory
Bug 509125 – CVE-2009-1891 httpd: possible temporary DoS (CPU consumption) in mod_deflate af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Patch, Third Party Advisory
Repository / Oval Repository af854a3a-2127-422b-91ae-364da2661108 oval.cisecurity.org Third Party Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
About Secunia Research | Flexera af854a3a-2127-422b-91ae-364da2661108 secunia.com Not Applicable, Vendor Advisory
Red Hat update for httpd - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Not Applicable, Vendor Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
rhn.redhat.com | Red Hat Support af854a3a-2127-422b-91ae-364da2661108 www.redhat.com Third Party Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
IBM PK99480: SHIP APAR FIXES FOR H28W700 FIX PACK 7.0.0.7. - United States af854a3a-2127-422b-91ae-364da2661108 www-01.ibm.com Third Party Advisory
IBM PK91361: CVE-2009-1891: MOD_DEFLATE - United States af854a3a-2127-422b-91ae-364da2661108 www-01.ibm.com Third Party Advisory
#534712 - apache2.2-common: DOS possible with mod_deflate - Debian Bug report logs af854a3a-2127-422b-91ae-364da2661108 bugs.debian.org Exploit
Debian -- Security Information -- DSA-1834-1 apache2 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
[SECURITY] Fedora 11 Update: httpd-2.2.13-1.fc11 af854a3a-2127-422b-91ae-364da2661108 www.redhat.com Mailing List, Third Party Advisory
About Security Update 2009-006 / Mac OS X v10.6.2 af854a3a-2127-422b-91ae-364da2661108 support.apple.com Broken Link
Webmail : Solution de messagerie professionnelle - OVHcloud- OVH af854a3a-2127-422b-91ae-364da2661108 www.vupen.com Permissions Required, Vendor Advisory
marc.info af854a3a-2127-422b-91ae-364da2661108 marc.info Exploit, Issue Tracking, Mailing List, Third Party Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Advisories:rPSA-2009-0142 - rPath Wiki af854a3a-2127-422b-91ae-364da2661108 wiki.rpath.com Broken Link
Debian update for apache2 - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Not Applicable, Vendor Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
APPLE-SA-2009-11-09-1 Security Update 2009-006 / Mac OS X v10.6.2 af854a3a-2127-422b-91ae-364da2661108 lists.apple.com Broken Link, Mailing List
Advisories:rPSA-2009-0142 - rPath Wiki af854a3a-2127-422b-91ae-364da2661108 wiki.rpath.com Broken Link
'[security bulletin] HPSBUX02612 SSRT100345 rev.1 - HP-UX Apache-based Web Server, Local Information' - MARC af854a3a-2127-422b-91ae-364da2661108 marc.info Issue Tracking, Mailing List, Third Party Advisory
SUSE update for apache2 and libapr1 - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Not Applicable, Vendor Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Webmail : Solution de messagerie professionnelle - OVHcloud- OVH af854a3a-2127-422b-91ae-364da2661108 www.vupen.com Permissions Required, Vendor Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Advisories | Mandriva af854a3a-2127-422b-91ae-364da2661108 www.mandriva.com Broken Link, Patch
SecurityTracker.com Archives - Apache mod_deflate Connection State Bug Lets Remote Users Deny Service af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Broken Link, Third Party Advisory, VDB Entry
SecurityFocus af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
osvdb.org/55782 af854a3a-2127-422b-91ae-364da2661108 osvdb.org Broken Link
Repository / Oval Repository af854a3a-2127-422b-91ae-364da2661108 oval.cisecurity.org Third Party Advisory
Pony Mail! MITRE lists.apache.org
Pony Mail! MITRE lists.apache.org
Pony Mail! MITRE lists.apache.org
Pony Mail! MITRE lists.apache.org
Pony Mail! MITRE lists.apache.org
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