CVE-2016-2167

The canonicalize_username function in svnserve/cyrus_auth.c in Apache Subversion before 1.8.16 and 1.9.x before 1.9.4, when Cyrus SASL authentication is used, allows remote attackers to authenticate and bypass intended access restrictions via a realm string that is a prefix of an expected repository realm string.

• CVE ID
• CVE-2016-2167

• Assigner
• secalert@redhat.com

• Vulnerability Status
• Modified

• Published Version
• 2016-05-05T18:59:00

• Last Modified Date
• 2020-10-20T22:15:17

• Version
• 2.0

• Vector String
• AV:N/AC:M/Au:S/C:P/I:P/A:N

• Access Vector
• NETWORK

• Access Compatibility
• MEDIUM

• Authentication
• SINGLE

• Confidentiality Impact
• PARTIAL

• Integrity Impact
• PARTIAL

• Availability Impact
• NONE

• Base Score
• 4.9

• Severity
• MEDIUM

• Exploitability Score
• 6.8

• Impact Score
• 4.9

• Version
• 3.0

• Vector String
• CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

• Attack Vector
• NETWORK

• Attack Compatibility
• HIGH

• Privileges Required
• LOW

• User Interaction
• NONE

• Scope
• UNCHANGED

• Confidentiality Impact
• HIGH

• Availability Impact
• NONE

• Base Score
• 6.8

• Base Severity
• MEDIUM

• Exploitability Score
• 1.6

• Impact Score
• 5.2