CVE-2021-34798

CWE-476 — NULL Pointer DereferenceCWE-120 — Classic Buffer OverflowCWE-125 — Out-of-bounds ReadCWE-918 — Server-Side Request Forgery (SSRF)14 documents10 sources
Severity
7.5HIGH
EPSS
10.3%
top 6.83%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
13
Siemens Sinema Remote Connect ServerApache Software Foundation Apache Http ServerApache Http Server+10 more
Timeline
PublishedSep 16
Latest updateApr 15

Description

Malformed requests may cause the server to dereference a NULL pointer. 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:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages13 packages

▶NVDapache/http_server2.4.48
▶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

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

Patches

Patch: cert-portal.siemens.com ↗Patch: www.oracle.com ↗Patch: www.oracle.com ↗

🔴Vulnerability Details

6
GHSA
GHSA-6cg7-x9gh-4wf6: Malformed requests may cause the server to dereference a NULL pointer↗2022-05-24
▶
OSV
apache2 regression↗2021-09-28
▶
OSV
apache2 vulnerabilities↗2021-09-27
▶
OSV
apache2 vulnerabilities↗2021-09-27
▶
CVEList
NULL pointer dereference in httpd core↗2021-09-16
▶

📋Vendor Advisories

7
Oracle
Oracle Oracle Fusion Middleware Risk Matrix: SSL Module (Apache HTTP Server) — CVE-2021-34798↗2023-04-15
▶
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: NULL pointer dereference via malformed requests↗2021-09-16
▶