CVE-2017-9798
HIGH EXPLOITED RANSOMWAREApache httpd <2.4.28 - Use After Free
Title source: llmDescription
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.
Exploits (8)
nomisec
SCANNER
18 stars
by brokensound77 · infoleak
https://github.com/brokensound77/OptionsBleed-POC-Scanner
github
WORKING POC
1 stars
by vaishakhcv · perlpoc
https://github.com/vaishakhcv/CVE-exploits/tree/master/CVE-2017-9798
github
WORKING POC
by winterwolf32 · perlpoc
https://github.com/winterwolf32/CVE_Exploits-/tree/master/CVE-2017-9798
metasploit
SCANNER
by Hanno Böck, h00die · rubypoc
https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/apache_optionsbleed.rb
References (56)
... and 36 more
Scores
CVSS v3
7.5
EPSS
0.9384
EPSS Percentile
99.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploitation Intel
VulnCheck KEV
2022-02-22
Ransomware Use
Confirmed
Classification
CWE
CWE-416
Status
draft
Affected Products (22)
apache/http_server
< 2.2.34
apache/http_server
apache/http_server
apache/http_server
apache/http_server
apache/http_server
apache/http_server
apache/http_server
apache/http_server
apache/http_server
apache/http_server
apache/http_server
apache/http_server
apache/http_server
apache/http_server
... and 7 more
Timeline
Published
Sep 18, 2017
Tracked Since
Feb 18, 2026