CVE-2009-1891

Public Exploit

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).

Category

7.1
CVSS
Severity: High
CVSS 2.0 •
EPSS 20.93% Top 5%
Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory ibm.com Vendor Advisory mandriva.com Vendor Advisory ibm.com Vendor Advisory marc.info Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory marc.info Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory apple.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory vupen.com Vendor Advisory vupen.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://marc.info/?l=apache-httpd-dev&m=124621326524824&w=2 issue tracking mailing list exploit third party advisory
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01363.html mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00006.html mailing list third party advisory vendor advisory
http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0142 broken link
http://secunia.com/advisories/35781 not applicable third party advisory vendor advisory
http://www-01.ibm.com/support/docview.wss?uid=swg1PK99480 third party advisory vendor advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12361 vdb entry third party advisory signature
http://www.mandriva.com/security/advisories?name=MDVSA-2009:149 broken link patch vendor advisory
http://www-01.ibm.com/support/docview.wss?uid=swg1PK91361 third party advisory vendor advisory
http://marc.info/?l=bugtraq&m=130497311408250&w=2 issue tracking mailing list third party advisory vendor advisory
http://www.redhat.com/support/errata/RHSA-2009-1156.html third party advisory vendor advisory
http://secunia.com/advisories/35865 not applicable third party advisory vendor advisory
http://www.vupen.com/english/advisories/2009/1841 permissions required vdb entry vendor advisory
http://secunia.com/advisories/37152 not applicable third party advisory vendor advisory
http://www.securitytracker.com/id?1022529 vdb entry third party advisory broken link
http://marc.info/?l=apache-httpd-dev&m=124661528519546&w=2 issue tracking mailing list third party advisory
http://www.debian.org/security/2009/dsa-1834 third party advisory vendor advisory
http://www.securityfocus.com/archive/1/507857/100/0/threaded mailing list vdb entry third party advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8632 vdb entry third party advisory signature
http://marc.info/?l=bugtraq&m=129190899612998&w=2 issue tracking mailing list third party advisory vendor advisory
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=534712 exploit
http://security.gentoo.org/glsa/glsa-200907-04.xml third party advisory vendor advisory
http://wiki.rpath.com/Advisories:rPSA-2009-0142 broken link
https://rhn.redhat.com/errata/RHSA-2009-1148.html third party advisory vendor advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9248 vdb entry third party advisory signature
http://www.ubuntu.com/usn/USN-802-1 third party advisory vendor advisory
http://secunia.com/advisories/37221 not applicable third party advisory vendor advisory
http://www.vupen.com/english/advisories/2009/3184 permissions required vdb entry vendor advisory
http://secunia.com/advisories/35793 not applicable third party advisory vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=509125 issue tracking third party advisory patch
http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html mailing list broken link vendor advisory
http://secunia.com/advisories/35721 not applicable third party advisory vendor advisory
http://support.apple.com/kb/HT3937 broken link
http://osvdb.org/55782 vdb entry broken link
https://lists.apache.org/thread.html/54a42d4b01968df1117cea77fc53d6beb931c0e05936ad02af93e9ac%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/5df9bfb86a3b054bb985a45ff9250b0332c9ecc181eec232489e7f79%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/r0276683d8e1e07153fc8642618830ac0ade85b9ae0dc7b07f63bb8fc%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/r8828e649175df56f1f9e3919938ac7826128525426e2748f0ab62feb%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/r7dd6be4dc38148704f2edafb44a8712abaa3a2be120d6c3314d55919%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/r84d043c2115176958562133d96d851495d712aa49da155d81f6733be%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/r2cb985de917e7da0848c440535f65a247754db8b2154a10089e4247b%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/r9e8622254184645bc963a1d47c5d47f6d5a36d6f080d8d2c43b2b142%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/rc4c53a0d57b2771ecd4b965010580db355e38137c8711311ee1073a8%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/rad01d817195e6cc871cb1d73b207ca326379a20a6e7f30febaf56d24%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/r5f9c22f9c28adbd9f00556059edc7b03a5d5bb71d4bb80257c0d34e4%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/rb9c9f42dafa25d2f669dac2a536a03f2575bc5ec1be6f480618aee10%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E mailing list

Frequently Asked Questions

What is the severity of CVE-2009-1891?
CVE-2009-1891 has been scored as a high severity vulnerability.
How to fix CVE-2009-1891?
To fix CVE-2009-1891, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-1891 being actively exploited in the wild?
It is possible that CVE-2009-1891 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~21% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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