MIT Kerberos V configuration file KRB_CONF environmental variable buffer overflow
| kerberos-config-file-bo (7184) |  High Risk |
Description:
MIT Kerberos 5 using the Kerberos 4 compatibility libraries is vulnerable to a buffer overflow caused by a long line in a kerberos configuration file. By specifying a long line in the configuration file using the KRB_CONF environmental variable, a local attacker can overflow a buffer to gain root privileges on the affected system.
Platforms Affected:
- MIT, Kerberos
Remedy:
Upgrade to the latest version of Kerberos 5 (1.0.6 or later), available from the MIT Kerberos Web site. See References.
Consequences:
Gain Privileges
References:
- MIT Kerberos Web site, Kerberos 5 Release 1.0 announcement at http://web.mit.edu/kerberos/www/krb5-1.0/announce.html.
- Secure Network Operations Security Advisory, April 29, 1997, Vulnerabilities in Kerberos V at http://archives.neohapsis.com/archives/bugtraq/1997_2/0146.html.
- CVE-1999-1296: Buffer overflow in Kerberos IV compatibility libraries as used in Kerberos V allows local users to gain root privileges via a long line in a kerberos configuration file, which can be specified via the KRB_CONF environmental variable.
Reported:
Apr 29, 1997
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