Joined: 12 May 2004
|Posted: Tue Apr 03, 2007 10:26 pm Post subject: [ GLSA 200704-02 ] MIT Kerberos 5: Arbitrary remote code exe
|Gentoo Linux Security Advisory
Title: MIT Kerberos 5: Arbitrary remote code execution (GLSA 200704-02)
Date: April 03, 2007
Multiple vulnerabilities in MIT Kerberos 5 could potentially result in unauthenticated remote root code execution.
MIT Kerberos 5 is a suite of applications that implement the Kerberos network protocol.
Vulnerable: < 1.5.2-r1
Unaffected: >= 1.5.2-r1
Architectures: All supported architectures
The Kerberos telnet daemon fails to properly handle usernames allowing unauthorized access to any account (CVE-2007-0956). The Kerberos administration daemon, the KDC and possibly other applications using the MIT Kerberos libraries are vulnerable to the following issues. The krb5_klog_syslog function from the kadm5 library fails to properly validate input leading to a stack overflow (CVE-2007-0957). The GSS-API library is vulnerable to a double-free attack (CVE-2007-1216).
By exploiting the telnet vulnerability a remote attacker may obtain access with root privileges. The remaining vulnerabilities may allow an authenticated remote attacker to execute arbitrary code with root privileges.
There is no known workaround at this time.
All MIT Kerberos 5 users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/mit-krb5-1.5.2-r1"