Red Hat Security Advisory 2015-0439-01 - A NULL pointer dereference flaw was found in the MIT Kerberos SPNEGO acceptor for continuation tokens. A remote, unauthenticated attacker could use this flaw to crash a GSSAPI-enabled server application. A buffer overflow was found in the KADM5 administration server when it was used with an LDAP back end for the KDC database. A remote, authenticated attacker could potentially use this flaw to execute arbitrary code on the system running kadmind. A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library call the gss_process_context_token() function could use this flaw to crash that application.
8fb3cb2b9059c57c7254cbf03e0d41bd0654d31056df1eba6018ce76a9148bb1Red Hat Security Advisory 2014-1389-02 - Kerberos is a networked authentication system which allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos KDC. It was found that if a KDC served multiple realms, certain requests could cause the setup_server_realm() function to dereference a NULL pointer. A remote, unauthenticated attacker could use this flaw to crash the KDC using a specially crafted request. A NULL pointer dereference flaw was found in the MIT Kerberos SPNEGO acceptor for continuation tokens. A remote, unauthenticated attacker could use this flaw to crash a GSSAPI-enabled server application.
c2947ddb91d4200d6e969ec8c1740f81beee6d987fb797c219ac8a48d6353a72Mandriva Linux Security Advisory 2014-165 - MIT Kerberos 5 allows attackers to cause a denial of service via a buffer over-read or NULL pointer dereference, by injecting invalid tokens into a GSSAPI application session. MIT Kerberos 5 allows attackers to cause a denial of service via a double-free flaw or NULL pointer dereference, while processing invalid SPNEGO tokens. In MIT Kerberos 5, when kadmind is configured to use LDAP for the KDC database, an authenticated remote attacker can cause it to perform an out-of-bounds write.
1e9f84d92cfa944b8c243cde11eefeb215c7381ed94e3f32f26202deebb50962Ubuntu Security Notice 2310-1 - It was discovered that Kerberos incorrectly handled certain crafted Draft 9 requests. A remote attacker could use this issue to cause the daemon to crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS. It was discovered that Kerberos incorrectly handled certain malformed KRB5_PADATA_PK_AS_REQ AS-REQ requests. A remote attacker could use this issue to cause the daemon to crash, resulting in a denial of service. This issue only affected Ubuntu 10.04 LTS and Ubuntu 12.04 LTS. Various other issues were also addressed.
58d3eb1fd12379457b7d374a0622ac5c590760d80a72c972ae312eb6169fd50cDebian Linux Security Advisory 3000-1 - Several vulnerabilities were discovered in krb5, the MIT implementation of Kerberos.
9e0bf167110ededceb1858ae76f9d9ae9089e225902c5c4500a77d626fe971c7
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