Gentoo Linux Security Advisory 201201-13 - Multiple vulnerabilities have been found in MIT Kerberos 5, the most severe of which may allow remote execution of arbitrary code. Versions less than 1.9.2-r1 are affected.
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VMware Security Advisory 2011-0012 - VMware ESXi and ESX updates to third party libraries and ESX Service Console address several security issues.
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HP Security Bulletin HPSBOV02682 SSRT100495 - Potential vulnerabilities have been identified with HP OpenVMS running Kerberos. The vulnerabilities could be remotely exploited to create a Denial of Service (DoS) or execution of arbitrary code, or by a remote unauthorized user to modify data, prompts, or responses. Revision 1 of this advisory.
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VMware Security Advisory 2011-0007 - VMware ESXi and ESX could encounter a socket exhaustion situation which may lead to a denial of service. Updates to Likewise components and to the ESX Service Console address security vulnerabilities.
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Ubuntu Security Notice 1030-1 - It was discovered that Kerberos did not properly determine the acceptability of certain checksums. A remote attacker could use certain checksums to alter the prompt message, modify a response to a Key Distribution Center (KDC) or forge a KRB-SAFE message. It was discovered that Kerberos did not properly determine the acceptability of certain checksums. A remote attacker could use certain checksums to forge GSS tokens or gain privileges. This issue only affected Ubuntu 9.10, 10.04 LTS and 10.10. It was discovered that Kerberos did not reject RC4 key-derivation checksums. An authenticated remote user could use this issue to forge AD-SIGNEDPATH or AD-KDC-ISSUED signatures and possibly gain privileges. This issue only affected Ubuntu 10.04 LTS and 10.10. It was discovered that Kerberos did not properly restrict the use of TGT credentials for armoring TGS requests. A remote authenticated user could use this flaw to impersonate a client. This issue only affected Ubuntu 9.10.
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Debian Linux Security Advisory 2129-1 - A vulnerability has been found in krb5, the MIT implementation of Kerberos.
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Mandriva Linux Security Advisory 2010-246 - Multiple vulnerabilities were discovered and corrected in krb5. An unauthenticated remote attacker could alter a SAM-2 challenge, affecting the prompt text seen by the user or the kind of response sent to the KDC. An unauthenticated remote attacker has a 1/256 chance of forging KRB-SAFE messages in an application protocol if the targeted pre-existing session uses an RC4 session key. An unauthenticated remote attacker can forge GSS tokens that are intended to be integrity-protected but unencrypted, if the targeted pre-existing application session uses a DES session key. Various other issues have also been addressed. The updated packages have been patched to correct these issues.
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Mandriva Linux Security Advisory 2010-245 - A vulnerability was discovered and corrected in krb5. An unauthenticated remote attacker could alter a SAM-2 challenge, affecting the prompt text seen by the user or the kind of response sent to the KDC. Under some circumstances, this can negate the incremental security benefit of using a single-use authentication mechanism token. An unauthenticated remote attacker has a 1/256 chance of forging KRB-SAFE messages in an application protocol if the targeted pre-existing session uses an RC4 session key. Few application protocols use KRB-SAFE messages.
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Multiple checksum handling vulnerabilities exist in Kerberos. These vulnerabilities are in the MIT implementation of Kerberos (krb5), but because these vulnerabilities arise from flaws in protocol handling logic, other implementations may also be vulnerable.
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