Attacker Value
Unknown
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User Interaction
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Privileges Required
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CVE-2019-3877

Disclosure Date: March 27, 2019
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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.

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CVSS V3 Severity and Metrics
Base Score:
None
Impact Score:
Unknown
Exploitability Score:
Unknown
Vector:
Unknown
Attack Vector (AV):
Unknown
Attack Complexity (AC):
Unknown
Privileges Required (PR):
Unknown
User Interaction (UI):
Unknown
Scope (S):
Unknown
Confidentiality (C):
Unknown
Integrity (I):
Unknown
Availability (A):
Unknown

General Information

Vendors

  • canonical,
  • fedoraproject,
  • mod auth mellon project,
  • redhat

Products

  • enterprise linux 7.0,
  • fedora 29,
  • mod auth mellon,
  • ubuntu linux 18.04,
  • ubuntu linux 18.10
Technical Analysis