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Vulnerability record · CVE-2009-1890 · published 5 July 2009

CVE-2009-1890: Apache http server uncontrolled resource consumption vulnerability

Apache · Http Server

The stream_reqbody_cl function in mod_proxy_http.c in the mod_proxy module in the Apache HTTP Server before 2.3.3, when a reverse proxy is configured, does not properly handle an amount of streamed data that exceeds the Content-Length value, which allows remote attackers to cause a denial of service (CPU consumption) via crafted requests.

7.1 CVSS 2.0 High EPSS 16% · top 3.2% CWE-400 · Uncontrolled resource consumption
7.1CVSS 2.0 base score
16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
9Affected product versions listed by NVD
98References
16 Jun 2026Last modified by NVD

Description

The stream_reqbody_cl function in mod_proxy_http.c in the mod_proxy module in the Apache HTTP Server before 2.3.3, when a reverse proxy is configured, does not properly handle an amount of streamed data that exceeds the Content-Length value, which allows remote attackers to cause a denial of service (CPU consumption) via crafted requests.

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

Affected products

9 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html Broken LinkMailing List
http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00006.html Mailing ListThird Party Advisory
http://marc.info/?l=bugtraq&m=129190899612998&w=2 Issue TrackingMailing ListThird Party Advisory
http://osvdb.org/55553 Broken Link
http://secunia.com/advisories/35691 Not ApplicableVendor Advisory
http://secunia.com/advisories/35721 Not Applicable
http://secunia.com/advisories/35793 Not Applicable
http://secunia.com/advisories/35865 Not Applicable
http://secunia.com/advisories/37152 Not ApplicableVendor Advisory
http://secunia.com/advisories/37221 Not ApplicableVendor Advisory
http://security.gentoo.org/glsa/glsa-200907-04.xml Third Party Advisory
http://support.apple.com/kb/HT3937 Broken Link
http://svn.apache.org/viewvc/httpd/httpd/trunk/CHANGES?r1=790587&r2=790586&pathrev=790587 PatchVendor Advisory
http://svn.apache.org/viewvc/httpd/httpd/trunk/CHANGES?revision=790587 Vendor Advisory
http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/proxy/mod_proxy_http.c?r1=790587&r2=790586&pathrev=790587 PatchVendor Advisory
http://svn.apache.org/viewvc?view=rev&revision=790587 Vendor Advisory
http://wiki.rpath.com/Advisories:rPSA-2009-0142 Broken Link
http://www-01.ibm.com/support/docview.wss?uid=swg1PK91259 Third Party Advisory
http://www-01.ibm.com/support/docview.wss?uid=swg1PK99480 Third Party Advisory
http://www.debian.org/security/2009/dsa-1834 Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2009:149 Broken Link
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150 Broken Link
http://www.oracle.com/technetwork/topics/security/cpuapr2013-1899555.html Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2009-1156.html Third Party Advisory
http://www.securityfocus.com/archive/1/507852/100/0/threaded Third Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/507857/100/0/threaded Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/35565 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id?1022509 Broken LinkThird Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/USN-802-1 Third Party Advisory
http://www.vupen.com/english/advisories/2009/3184 Permissions RequiredVendor Advisory
https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%
https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%
https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/r7dd6be4dc38148704f2edafb44a8712abaa3a2be120d6c3314d55919%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/r84d043c2115176958562133d96d851495d712aa49da155d81f6733be%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/rad01d817195e6cc871cb1d73b207ca326379a20a6e7f30febaf56d24%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/rb33be0aa9bd8cac9536293e3821dcd4cf8180ad95a8036eedd46365e%40%3Cusers.mina.apache.or

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Source: NIST National Vulnerability Database (record CVE-2009-1890), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.