CVE-2020-13950

HIGH

Apache HTTP Server 2.4.41-2.4.46 - Denial of Service via Crafted Content-Length and Transfer-Encoding Headers

Title source: llm

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

References (10)

Core 10

Core References

Vendor Advisory x_refsource_misc

http://httpd.apache.org/security/vulnerabilities_24.html

Mailing List, Release Notes x_refsource_misc

https://lists.apache.org/thread.html/re026d3da9d7824bd93b9f871c0fdda978d960c7e62d8c43cba8d0bf3%40%3Ccvs.httpd.apache.org%3E

Mailing List mailing-list x_refsource_mlist

https://lists.apache.org/thread.html/rbe197409ae4a58b629fb792d1aed541ccbbf865121a80e1c5938d223%40%3Cannounce.httpd.apache.org%3E

Mailing List mailing-list x_refsource_mlist

https://lists.apache.org/thread.html/r7f2b70b621651548f4b6f027552f1dd91705d7111bb5d15cda0a68dd%40%3Cdev.httpd.apache.org%3E

Mailing List, Third Party Advisory mailing-list x_refsource_mlist

http://www.openwall.com/lists/oss-security/2021/06/10/4

Third Party Advisory vendor-advisory x_refsource_gentoo

https://security.gentoo.org/glsa/202107-38

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/

Third Party Advisory x_refsource_misc

https://www.oracle.com/security-alerts/cpuoct2021.html

Third Party Advisory x_refsource_confirm

https://security.netapp.com/advisory/ntap-20210702-0001/

Scores

CVSS v3 7.5

EPSS 0.2154

EPSS Percentile 95.8%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE

CWE-476

Status published

Products (10)

apache/http_server 2.4.41 - 2.4.46

debian/debian_linux 9.0

debian/debian_linux 10.0

fedoraproject/fedora 34

fedoraproject/fedora 35

oracle/enterprise_manager_ops_center 12.4.0.0

oracle/instantis_enterprisetrack 17.1

oracle/instantis_enterprisetrack 17.2

oracle/instantis_enterprisetrack 17.3

oracle/zfs_storage_appliance_kit 8.8

Published Jun 10, 2021

Tracked Since Feb 18, 2026