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CVE-2019-3877

Publication date 22 March 2019

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.1 · Medium

Score breakdown

A vulnerability was found in mod_auth_mellon before v0.14.2. An open redirect in the logout URL allows requests with backslashes to pass through by assuming that it is a relative URL, while the browsers silently convert backslash characters into forward slashes treating them as an absolute URL. This mismatch allows an attacker to bypass the redirect URL validation logic in apr_uri_parse function.

Status

Package Ubuntu Release Status
libapache2-mod-auth-mellon 20.10 groovy
Fixed 0.14.2-1ubuntu1
20.04 LTS focal
Fixed 0.14.2-1ubuntu1
19.10 eoan
Fixed 0.14.2-1ubuntu1
19.04 disco
Fixed 0.14.2-1ubuntu1
18.10 cosmic
Fixed 0.14.0-1ubuntu0.1
18.04 LTS bionic
Fixed 0.13.1-1ubuntu0.1
16.04 LTS xenial
Fixed 0.12.0-2+deb9u1build0.16.04.1
14.04 LTS trusty Not in release

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

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:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-3924-1
    • mod_auth_mellon vulnerabilities
    • 28 March 2019
    • USN-4597-1
    • mod_auth_mellon vulnerabilities
    • 22 October 2020

Other references