CVEvulnerability

CVE-2017-9798

7.5 HIGH Published 2017-09-18 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2017-09-18
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-416

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.

Affected configurations

• apache http server (<= 2.2.34) • apache http server 2.4.0 • apache http server 2.4.1 • apache http server 2.4.2 • apache http server 2.4.3 • apache http server 2.4.4 • apache http server 2.4.6 • apache http server 2.4.7 • apache http server 2.4.9 • apache http server 2.4.10 • apache http server 2.4.12 • apache http server 2.4.16 • apache http server 2.4.17 • apache http server 2.4.18 • apache http server 2.4.20 • apache http server 2.4.23 • apache http server 2.4.25 • apache http server 2.4.26 • apache http server 2.4.27 • debian debian linux 7.0 • debian debian linux 8.0 • debian debian linux 9.0

Related

Weakness · CWE (1)

References