Joined: 12 May 2004
|Posted: Fri Apr 10, 2009 12:26 pm Post subject: [ GLSA 200904-09 ] MIT Kerberos 5: Multiple vulnerabilities
|Gentoo Linux Security Advisory
Title: MIT Kerberos 5: Multiple vulnerabilities (GLSA 200904-09)
Date: April 08, 2009
Bug(s): #262736, #263398
Multiple vulnerabilities in MIT Kerberos 5 might allow remote
unauthenticated users to execute arbitrary code with root privileges.
MIT Kerberos 5 is a suite of applications that implement the Kerberos
network protocol. kadmind is the MIT Kerberos 5 administration daemon,
KDC is the Key Distribution Center.
Vulnerable: < 1.6.3-r6
Unaffected: >= 1.6.3-r6
Architectures: All supported architectures
Multiple vulnerabilities have been reported in MIT Kerberos 5:
- A free() call on an uninitialized pointer in the ASN.1 decoder
when decoding an invalid encoding (CVE-2009-0846).
- A buffer
overread in the SPNEGO GSS-API application, reported by Apple Product
- A NULL pointer dereference in the
SPNEGO GSS-API application, reported by Richard Evans
- An incorrect length check inside an ASN.1
decoder leading to spurious malloc() failures (CVE-2009-0847).
A remote unauthenticated attacker could exploit the first vulnerability
to cause a Denial of Service or, in unlikely circumstances, execute
arbitrary code on the host running krb5kdc or kadmind with root
privileges and compromise the Kerberos key database. Exploitation of
the other vulnerabilities might lead to a Denial of Service in kadmind,
krb5kdc, or other daemons performing authorization against Kerberos
that utilize GSS-API or an information disclosure.
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-krb5-1.6.3-r6"
Last edited by GLSA on Fri Jun 22, 2012 4:27 am; edited 1 time in total