CVE-2020-13950

CWE-476 — NULL Pointer Dereference9 documents8 sources
Severity
7.5HIGH
EPSS
21.5%
top 4.28%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
7
Apache Http ServerApache Software Foundation Apache Http ServerDebian Debian Linux+4 more
Timeline
PublishedJun 10
Latest updateMay 24

Description

Apache HTTP Server versions 2.4.41 to 2.4.46 mod_proxy_http can be made to crash (NULL pointer dereference) with specially crafted requests using both Content-Length and Transfer-Encoding headers, leading to a Denial of Service

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 Packages7 packages

▶NVDapache/http_server2.4.41 — 2.4.46
▶CVEListV5apache_software_foundation/apache_http_server2.4.41, 2.4.43, 2.4.46+2
▶Debianapache2< 2.4.46-6+3
▶Ubuntuapache2< 2.4.29-1ubuntu4.16+1
▶NVDoracle/instantis_enterprisetrack17.1, 17.2, 17.3+2

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

🔴Vulnerability Details

4
GHSA
GHSA-pqc6-p826-c5qw: Apache HTTP Server versions 2↗2022-05-24
▶
OSV
apache2 vulnerabilities↗2021-06-21
▶
OSV
CVE-2020-13950: Apache HTTP Server versions 2↗2021-06-10
▶
CVEList
mod_proxy_http NULL pointer dereference↗2021-06-10
▶

📋Vendor Advisories

4
Ubuntu
Apache HTTP Server vulnerabilities↗2021-06-21
▶
Microsoft
mod_proxy_http NULL pointer dereference↗2021-06-08
▶
Red Hat
httpd: mod_proxy NULL pointer dereference↗2021-06-04
▶
Debian
CVE-2020-13950: apache2 - Apache HTTP Server versions 2.4.41 to 2.4.46 mod_proxy_http can be made to crash...↗2020
▶
CVE-2020-13950 (HIGH CVSS 7.5) | Apache HTTP Server versions 2.4.41 | cvebase.io