CVE-2017-9798

CVE Details

Release Date:	2017-09-18
Impact:	Moderate	What is this?

Description

Apache httpd allows remote attackers to read secret data from processmemory 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.

See more information about CVE-2017-9798 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v2 metrics

Base Score:	5.0
Vector String:	AV:N/AC:L/Au:N/C:P/I:N/A:N
Version:	2.0
Attack Vector:	Network
Attack Complexity:	Low
Authentication:	None
Confidentiality Impact:	Partial
Integrity Impact:	None
Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (httpd)	ELSA-2017-2972	2017-10-19
Oracle Linux version 7 (httpd)	ELSA-2017-2882	2017-10-11