Resource exhaustion in Apache Http Server
CVE-2009-1891
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).
Vulnerability class: DoS (Denial of Service)
EPSS: 0.171 (96.8th percentile) — read the EPSS interpretation.
Affected products
- Apache Http_server
- Canonical Ubuntu_linux — versions 6.06, 8.04, 8.10
- Debian Debian_linux — versions 4.0, 5.0, 6.0
- Fedoraproject Fedora — versions 11
- Redhat Enterprise_linux_desktop — versions 5.0
- Redhat Enterprise_linux_eus — versions 5.3
- Redhat Enterprise_linux_server — versions 5.0
- Redhat Enterprise_linux_server_aus — versions 5.3
- Redhat Enterprise_linux_workstation — versions 5.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Exploit, Mailing List, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (vendor-advisory, x_refsource_FEDORA, Mailing List, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- secalert@redhat.com (x_refsource_CONFIRM, Broken Link)
- secalert@redhat.com (x_refsource_SECUNIA, Not Applicable, Vendor Advisory, third-party-advisory)
- secalert@redhat.com (vendor-advisory, Third Party Advisory, x_refsource_AIXAPAR)
- secalert@redhat.com (signature, x_refsource_OVAL, Third Party Advisory, vdb-entry)
- secalert@redhat.com (vendor-advisory, Patch, x_refsource_MANDRIVA, Broken Link)
- secalert@redhat.com (vendor-advisory, Third Party Advisory, x_refsource_AIXAPAR)
- secalert@redhat.com (x_refsource_HP, vendor-advisory, Mailing List, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2009-1891?
- CVE-2009-1891 is a vulnerability in Apache Http Server, classified under Uncontrolled Resource Consumption. Published 2009-07-10.
- Is CVE-2009-1891 known to be exploited?
- 22 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.