Ubuntu Security Notice USN-2498-1

Fixed vulnerabilities:
CVE-2014-5351 (VulnLIB link)
It was discovered that Kerberos incorrectly sent old keys in response to a -randkey -keepold request. An authenticated remote attacker could use this issue to forge tickets by leveraging administrative access. This issue only affected Ubuntu 10.04 LTS, Ubuntu 12.04 LTS and Ubuntu 14.04 LTS.
CVE-2014-5352 (VulnLIB link)
It was discovered that the libgssapi_krb5 library incorrectly processed security context handles. A remote attacker could use this issue to cause a denial of service, or possibly execute arbitrary code.
CVE-2014-5353 (VulnLIB link)
Patrik Kis discovered that Kerberos incorrectly handled LDAP queries with no results. An authenticated remote attacker could use this issue to cause the KDC to crash, resulting in a denial of service.
CVE-2014-5354 (VulnLIB link)
It was discovered that Kerberos incorrectly handled creating database entries for a keyless principal when using LDAP. An authenticated remote attacker could use this issue to cause the KDC to crash, resulting in a denial of service.
CVE-2014-9421 (VulnLIB link)
It was discovered that Kerberos incorrectly handled memory when processing XDR data. A remote attacker could use this issue to cause kadmind to crash, resulting in a denial of service, or possibly execute arbitrary code.
CVE-2014-9422 (VulnLIB link)
It was discovered that Kerberos incorrectly handled two-component server principals. A remote attacker could use this issue to perform impersonation attacks.
CVE-2014-9423 (VulnLIB link)
It was discovered that the libgssrpc library leaked uninitialized bytes. A remote attacker could use this issue to possibly obtain sensitive information.

Affected releases:
Ubuntu 14.10
Ubuntu 14.04 LTS
Ubuntu 12.04 LTS
Ubuntu 10.04 LTS
Software description:
krb5 - MIT Kerberos Network Authentication Protocol
Solution:
Check VulnLIB for fixes for CVEs listed above and the source.
Source:

USN-2498-1: Kerberos vulnerabilities