CVE-2021-39275

CWE-787 — Out-of-bounds WriteCWE-120 — Classic Buffer OverflowCWE-125 — Out-of-bounds ReadCWE-476 — NULL Pointer DereferenceCWE-918 — Server-Side Request Forgery (SSRF)12 documents10 sources
Severity
9.8CRITICAL
EPSS
37.7%
top 2.80%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
8
Apache Http ServerApache Software Foundation Apache Http ServerDebian Debian Linux+5 more
Timeline
PublishedSep 16
Latest updateMay 24

Description

ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache HTTP Server 2.4.48 and earlier.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages7 packages

▶NVDapache/http_server< 2.4.49
▶CVEListV5apache_software_foundation/apache_http_serverApache HTTP Server 2.4 — 2.4.48
▶NVDoracle/http_server12.2.1.3.0, 12.2.1.4.0+1
▶Debianapache2< 2.4.51-1~deb11u1+3

Also affects: Debian Linux 10.0, 11.0, 9.0, Fedora 34, 35

Patches

Patch: lists.apache.org ↗Patch: lists.apache.org ↗Patch: lists.apache.org ↗

🔴Vulnerability Details

4
GHSA
GHSA-p59c-pqfv-4fwc: ap_escape_quotes() may write beyond the end of a buffer when given malicious input↗2022-05-24
▶
OSV
apache2 vulnerabilities↗2021-09-27
▶
CVEList
ap_escape_quotes buffer overflow↗2021-09-16
▶
OSV
CVE-2021-39275: ap_escape_quotes() may write beyond the end of a buffer when given malicious input↗2021-09-16
▶

📋Vendor Advisories

7
Oracle
Oracle Oracle Fusion Middleware Risk Matrix: Web Listener (Apache HTTP Server) — CVE-2021-39275↗2022-04-15
▶
Cisco
Multiple Vulnerabilities in Apache HTTP Server Affecting Cisco Products: November 2021↗2021-11-24
▶
Ubuntu
Apache HTTP Server vulnerabilities↗2021-09-27
▶
Ubuntu
Apache HTTP Server vulnerabilities↗2021-09-27
▶
Red Hat
httpd: Out-of-bounds write in ap_escape_quotes() via malicious input↗2021-09-16
▶