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CVE-2020-17525

Published: 10 February 2021

Subversion's mod_authz_svn module will crash if the server is using in-repository authz rules with the AuthzSVNReposRelativeAccessFile option and a client sends a request for a non-existing repository URL. This can lead to disruption for users of the service. This issue was fixed in mod_dav_svn+mod_authz_svn servers 1.14.1 and mod_dav_svn+mod_authz_svn servers 1.10.7

From the Ubuntu Security Team

Thomas Åkesson discovered that Subversion incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
subversion
Launchpad, Ubuntu, Debian
bionic
Released (1.9.7-4ubuntu1.1)
focal
Released (1.13.0-3ubuntu0.2)
groovy Ignored
(reached end-of-life)
hirsute Not vulnerable
(1.14.1-1)
impish Not vulnerable
(1.14.1-1)
jammy Not vulnerable
(1.14.1-1)
precise Not vulnerable
(code not present)
trusty Does not exist

upstream
Released (1.10.7, 1.14.1)
xenial
Released (1.9.3-2ubuntu1.3+esm1)
Binaries built from this source package are in Universe and so are supported by the community.

Severity score breakdown

Parameter Value
Base score 7.5
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