CVE-2017-9798

HIGH EXPLOITED RANSOMWARE

Apache httpd <2.4.28 - Use After Free

Title source: llm

Description

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
nomisec SCANNER 3 stars
by nitrado · local
https://github.com/nitrado/CVE-2017-9798
nomisec SCANNER 2 stars
by pabloec20 · poc
https://github.com/pabloec20/optionsbleed
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
nomisec SCANNER
by l0n3rs · local
https://github.com/l0n3rs/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
exploitdb SCANNER
by Hanno Bock · pythonwebappslinux
https://www.exploit-db.com/exploits/42745

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