CVE-2015-3206

The checkPassword function in python-kerberos does not authenticate the KDC it attempts to communicate with, which allows remote attackers to cause a denial of service (bad response), or have other unspecified impact by performing a man-in-the-middle attack.

Weakness

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected Software

Potential Mitigations

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/114.html
• https://cwe.mitre.org/data/definitions/115.html
• https://cwe.mitre.org/data/definitions/151.html
• https://cwe.mitre.org/data/definitions/194.html
• https://cwe.mitre.org/data/definitions/22.html
• https://cwe.mitre.org/data/definitions/57.html
• https://cwe.mitre.org/data/definitions/593.html
• https://cwe.mitre.org/data/definitions/633.html
• https://cwe.mitre.org/data/definitions/650.html
• https://cwe.mitre.org/data/definitions/94.html

References

• http://www.openwall.com/lists/oss-security/2015/05/21/3
• http://www.securityfocus.com/bid/74760
• https://bugzilla.redhat.com/show_bug.cgi?id=1223802
• https://github.com/apple/ccs-pykerberos/issues/31
• https://pypi.python.org/pypi/kerberos
• http://www.openwall.com/lists/oss-security/2015/05/21/3
• http://www.securityfocus.com/bid/74760
• https://bugzilla.redhat.com/show_bug.cgi?id=1223802
• https://github.com/apple/ccs-pykerberos/issues/31
• https://pypi.python.org/pypi/kerberos