CVE-2019-3877
libapache2-mod-auth-mellon - security update
6.1
MEDIUM
CVSS 3.1
EPSS 0.81%
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.
How to fix CVE-2019-3877
To remediate CVE-2019-3877, upgrade the affected package to a fixed version below.
- —upgrade to 0.14.2-1 or later
- —upgrade to 0.12.0-2+deb9u1 or later
Is CVE-2019-3877 being exploited?
Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 0.14.2-1
- from 0, < 0.12.0-2+deb9u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |