FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

Apache -- HTTP OPTIONS method can leak server memory

Affected packages
apache24 < 2.4.27_1
apache22 < 2.2.34_1


VuXML ID 76b085e2-9d33-11e7-9260-000c292ee6b8
Discovery 2017-09-18
Entry 2017-09-19

The Fuzzing Project reports:

Apache httpd allows remote attackers to read secret data from process memory if the Limit directive can be set in a user's .htaccess file, or if httpd.conf has certain misconfigurations, aka Optionsbleed. This affects the Apache HTTP Server through 2.2.34 and 2.4.x through 2.4.27. The attacker sends an unauthenticated OPTIONS HTTP request when attempting to read secret data. This is a use-after-free issue and thus secret data is not always sent, and the specific data depends on many factors including configuration. Exploitation with .htaccess can be blocked with a patch to the ap_limit_section function in server/core.c.


CVE Name CVE-2017-9798