CVE-2019-3877

Public on 2019-05-02
Modified on 2019-05-20
Description
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.
Severity
Medium
CVSS v3 Base Score
6.1
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 mod_auth_mellon 2019-05-16 21:50 ALAS2-2019-1200
Amazon Linux 1 mod24_auth_mellon 2019-05-02 17:18 ALAS-2019-1200

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD CVSSv2 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
NVD CVSSv3 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N