Public Date:
1691125: CVE-2019-3877 mod_auth_mellon: open redirect in logout url when using URLs with backslashes

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2019-3877 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v3 metrics

CVSS3 Base Score 5.8
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality None
Integrity Impact Low
Availability Impact None

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 7 (mod_auth_mellon) RHSA-2019:0766 2019-04-16

Affected Packages State

Platform Package State
Red Hat Software Collections for Red Hat Enterprise Linux httpd24-mod_auth_mellon Affected
Red Hat Enterprise Linux 8 appstream/mod_auth_mellon Affected
Red Hat Enterprise Linux 6 mod_auth_mellon Will not fix
Last Modified

CVE description copyright © 2017, The MITRE Corporation