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Debian Security Advisory DSA 1766-1 (krb5)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update to krb5 announced via advisory DSA 1766-1.
Insight
Insight
Several vulnerabilities have been found in the MIT reference implementation of Kerberos V5, a system for authenticating users and services on a network. The Common Vulnerabilities and Exposures project identified the following problems: The Apple Product Security team discovered that the SPNEGO GSS-API mechanism suffers of a missing bounds check when reading a network input buffer which results in an invalid read crashing the application or possibly leaking information (CVE-2009-0844). Under certain conditions the SPNEGO GSS-API mechanism references a null pointer which crashes the application using the library (CVE-2009-0845). An incorrect length check inside the ASN.1 decoder of the MIT krb5 implementation allows an unauthenticated remote attacker to crash of the kinit or KDC program (CVE-2009-0847). Under certain conditions the the ASN.1 decoder of the MIT krb5 implementation frees an uninitialized pointer which could lead to denial of service and possibly arbitrary code execution (CVE-2009-0846). For the oldstable distribution (etch), this problem has been fixed in version 1.4.4-7etch7. For the stable distribution (lenny), this problem has been fixed in version 1.6.dfsg.4~beta1-5lenny1. For the testing distribution (squeeze), this problem will be fixed soon. For the unstable distribution (sid), this problem has been fixed in version 1.6.dfsg.4~beta1-13. We recommend that you upgrade your krb5 packages.
Solution
Solution
https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201766-1