Vulnerability Monitor

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CVE-2016-3120

The validate_as_request function in kdc_util.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.13.6 and 1.4.x before 1.14.3, when restrict_anonymous_to_tgt is enabled, uses an incorrect client data structure, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via an S4U2Self request.

Published

2016-08-01T02:59:12.370

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 6.5 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:N/I:N/A:P

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: SINGLE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

8.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-476
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application mit kerberos_5 1.13 Yes
Application mit kerberos_5 1.13.1 Yes
Application mit kerberos_5 1.13.2 Yes
Application mit kerberos_5 1.13.3 Yes
Application mit kerberos_5 1.13.4 Yes
Application mit kerberos_5 1.13.5 Yes
Application mit kerberos_5 1.13.6 Yes
Application mit kerberos_5 1.14 Yes
Application mit kerberos_5 1.14.1 Yes
Application mit kerberos_5 1.14.2 Yes
References