CVE-2019-3877

Advisory lineage Upstream: 0 Downstream: 7
Modified
Published: 27 Mar 2019, 12:19
Last modified:04 Aug 2024, 19:19

Vulnerability Summary

Overall Risk (default)
medium
25/100
CVSS Score
6.1 MEDIUM
v3.0 (nvd)
EPSS Score
0.81% LOW
1% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

27 Mar 2019, 12:19
Published
Vulnerability first disclosed
04 Aug 2024, 19:19
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.0•MEDIUM•Score: 5.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
  • v3.0•MEDIUM•Score: 6.1CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  • v2.0•MEDIUM•Score: 4.3AV:N/AC:M/Au:N/C:N/I:P/A:N

EPSS Trends

Current EPSS score: 0.81%• Percentile: 75%

Techniques & Countermeasures

  • CWE-601•URL Redirection to Untrusted Site ('Open Redirect')

    The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.

Affected Systems

  • canonical•ubuntu_linux

    18.04 | 18.10

  • fedoraproject•fedora

    29

  • mod_auth_mellon_project•mod_auth_mellon

    < 0.14.2

  • redhat•enterprise_linux

    7.0

  • uninett•mod_auth_mellon

    v0.14.2

References (8)