CVE-2009-1891

    Dashboard / Vulnerabilities / CVE-2009-1891

    CVE-2009-1891

    Published: 10 Jul 2009Last Modified: 10 Apr 2026

    Summary:

    Details: 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).

    References: 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://secunia.com/advisories/35721, http://secunia.com/advisories/35781, http://secunia.com/advisories/35793, http://secunia.com/advisories/35865, http://secunia.com/advisories/37152, http://secunia.com/advisories/37221, http://security.gentoo.org/glsa/glsa-200907-04.xml, 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, 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, https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01363.html, http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=534712, http://marc.info/?l=apache-httpd-dev&m=124621326524824&w=2, http://www.mandriva.com/security/advisories?name=MDVSA-2009:149, https://bugzilla.redhat.com/show_bug.cgi?id=509125, 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://www.vupen.com/english/advisories/2009/1841, http://www.vupen.com/english/advisories/2009/3184, https://bugzilla.redhat.com/show_bug.cgi?id=509125, http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html, http://osvdb.org/55782, 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.securitytracker.com/id?1022529, https://lists.apache.org/thread.html/54a42d4b01968df1117cea77fc53d6beb931c0e05936ad02af93e9ac%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/5df9bfb86a3b054bb985a45ff9250b0332c9ecc181eec232489e7f79%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/r0276683d8e1e07153fc8642618830ac0ade85b9ae0dc7b07f63bb8fc%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/r2cb985de917e7da0848c440535f65a247754db8b2154a10089e4247b%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/r5f9c22f9c28adbd9f00556059edc7b03a5d5bb71d4bb80257c0d34e4%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/r7dd6be4dc38148704f2edafb44a8712abaa3a2be120d6c3314d55919%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/r84d043c2115176958562133d96d851495d712aa49da155d81f6733be%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/r8828e649175df56f1f9e3919938ac7826128525426e2748f0ab62feb%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/r9e8622254184645bc963a1d47c5d47f6d5a36d6f080d8d2c43b2b142%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/rad01d817195e6cc871cb1d73b207ca326379a20a6e7f30febaf56d24%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/rb9c9f42dafa25d2f669dac2a536a03f2575bc5ec1be6f480618aee10%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/rc4c53a0d57b2771ecd4b965010580db355e38137c8711311ee1073a8%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High