CVE-2010-1321: Null Pointer Dereference
The kgacceptkrb5 function in krb5/acceptseccontext.c in the GSS-API library in MIT Kerberos 5 (aka krb5) through 1.7.1 and 1.8 before 1.8.2, as used in kadmind and other applications, does not properly check for invalid GSS-API tokens, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via an AP-REQ message in which the authenticator's checksum field is missing.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2010-1321?
CVE-2010-1321 has been classified as a moderate severity vulnerability that could lead to denial of service.
How do I fix CVE-2010-1321?
To fix CVE-2010-1321, upgrade your MIT Kerberos 5 implementation to version 1.8.2 or later.
Which software versions are affected by CVE-2010-1321?
CVE-2010-1321 affects MIT Kerberos 5 versions up to 1.8.1 and Debian and Ubuntu versions listed in the vulnerability report.
Can CVE-2010-1321 be exploited remotely?
Yes, CVE-2010-1321 can be exploited by remote authenticated users.
What is the impact of CVE-2010-1321 on systems?
The impact of CVE-2010-1321 can result in denial of service, making systems unresponsive due to improper handling of GSS-API tokens.