CVE-2020-13950

Publication date 10 June 2021

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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

Read the notes from the security team

Status

Package Ubuntu Release Status
apache2 22.04 LTS jammy
Fixed 2.4.46-4ubuntu2
21.10 impish
Fixed 2.4.46-4ubuntu2
21.04 hirsute
Fixed 2.4.46-4ubuntu1.1
20.10 groovy
Fixed 2.4.46-1ubuntu1.2
20.04 LTS focal
Fixed 2.4.41-4ubuntu3.3
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected

Notes

mdeslaur

need to check if bionic is vulnerable as it is older than 2.4.41 included in same backport commit as CVE-2019-17567 looks like it was introduced by: https://svn.apache.org/viewvc?view=revision&revision=1656259

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
apache2

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H