CVE-2019-13038

Publication date 29 June 2019

Last updated 18 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

mod_auth_mellon through 0.14.2 has an Open Redirect via the login?ReturnTo= substring, as demonstrated by omitting the // after http: in the target URL.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libapache2-mod-auth-mellon	25.10 questing	Fixed 0.14.2-1ubuntu2
	25.04 plucky	Fixed 0.14.2-1ubuntu2
	24.10 oracular	Fixed 0.14.2-1ubuntu2
	24.04 LTS noble	Fixed 0.14.2-1ubuntu2
	23.10 mantic	Fixed 0.14.2-1ubuntu2
	23.04 lunar	Fixed 0.14.2-1ubuntu2
	22.10 kinetic	Fixed 0.14.2-1ubuntu2
	22.04 LTS jammy	Fixed 0.14.2-1ubuntu2
	21.10 impish	Fixed 0.14.2-1ubuntu2
	21.04 hirsute	Fixed 0.14.2-1ubuntu2
	20.10 groovy	Fixed 0.14.2-1ubuntu2
	20.04 LTS focal	Fixed 0.14.2-1ubuntu2
	19.10 eoan	Fixed 0.14.2-1ubuntu1.19.10.1
	19.04 disco	Ignored end of life
	18.10 cosmic	Ignored end of life
	18.04 LTS bionic	Fixed 0.13.1-1ubuntu0.2
	16.04 LTS xenial	Vulnerable
	14.04 LTS trusty	Not in release

Notes

mdeslaur

original bug has been closed as the original project has been abandoned. new code repo maintained by RedHat available here: https://github.com/latchset/mod_auth_mellon/

Patch details

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

Package	Patch details
libapache2-mod-auth-mellon	Upstream: 5f220e7

Severity score breakdown

Parameter	Value
Base score	6.1 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Changed
Confidentiality	Low
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

Related Ubuntu Security Notices (USN)

USN-4291-1
mod-auth-mellon vulnerability
24 February 2020