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Dovecot 2.3.11 - 2.3.14 Path Traversal Vulnerability
Information
Severity
Severity
Medium
Family
Family
General
CVSSv2 Base
CVSSv2 Base
5.6
CVSSv2 Vector
CVSSv2 Vector
AV:L/AC:H/Au:N/C:C/I:C/A:N
Solution Type
Solution Type
Vendor Patch
Created
Created
2 years ago
Modified
Modified
2 years ago
Summary
Dovecot is prone to a path traversal vulnerability.
Insight
Insight
Dovecot does not correctly escape kid and azp fields in JWT tokens. This may be used to supply attacker controlled keys to validate tokens in some configurations. This requires attacker to be able to write files to local disk.
Affected Software
Affected Software
Dovecot version 2.3.11 through 2.3.14.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Update to version 2.3.14.1 or later. Workaround: Disable local JWT validation in oauth2, or use a different dict driver than fs:posix.