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CVE-2014-4341

Status Candidate

Overview

MIT Kerberos 5 (aka krb5) before 1.12.2 allows remote attackers to cause a denial of service (buffer over-read and application crash) by injecting invalid tokens into a GSSAPI application session.

Related Files

Red Hat Security Advisory 2015-0439-01
Posted Mar 5, 2015
Authored by Red Hat | Site access.redhat.com

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.

tags | advisory, remote, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2014-4341, CVE-2014-4342, CVE-2014-4343, CVE-2014-4344, CVE-2014-4345, CVE-2014-5352, CVE-2014-5353, CVE-2014-9421, CVE-2014-9422, CVE-2014-9423
MD5 | d85825377d22e6afe2ccf2cd0c784eca
Gentoo Linux Security Advisory 201412-53
Posted Dec 31, 2014
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201412-53 - A vulnerability has been found in MIT Kerberos 5, possibly resulting in arbitrary code execution or a Denial of Service condition. Versions less than 1.13 are affected.

tags | advisory, denial of service, arbitrary, code execution
systems | linux, gentoo
advisories | CVE-2014-4341, CVE-2014-4343, CVE-2014-4345, CVE-2014-5351
MD5 | 3fe9fa1f2ae51fe3eb986c38fc408d4e
Red Hat Security Advisory 2014-1389-02
Posted Oct 14, 2014
Authored by Red Hat | Site access.redhat.com

Red 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.

tags | advisory, remote
systems | linux, redhat
advisories | CVE-2013-1418, CVE-2013-6800, CVE-2014-4341, CVE-2014-4342, CVE-2014-4343, CVE-2014-4344, CVE-2014-4345
MD5 | 3399c0ccb4db1693911705316418e134
Red Hat Security Advisory 2014-1245-01
Posted Sep 16, 2014
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2014-1245-01 - Kerberos is an authentication system which allows clients and services to authenticate to each other with the help of a trusted third party, a Kerberos Key Distribution Center. 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.

tags | advisory, remote
systems | linux, redhat
advisories | CVE-2013-1418, CVE-2013-6800, CVE-2014-4341, CVE-2014-4344
MD5 | 3b03de4b18b5a989446df2034da2b8fb
Mandriva Linux Security Advisory 2014-165
Posted Sep 2, 2014
Authored by Mandriva | Site mandriva.com

Mandriva 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.

tags | advisory, remote, denial of service
systems | linux, mandriva
advisories | CVE-2014-4341, CVE-2014-4342, CVE-2014-4344, CVE-2014-4345
MD5 | 00ff82aaf3b43dcc1bdd162b6ce2a662
Ubuntu Security Notice USN-2310-1
Posted Aug 11, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu 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.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2012-1016, CVE-2013-1415, CVE-2013-1416, CVE-2013-1418, CVE-2013-6800, CVE-2014-4341, CVE-2014-4342, CVE-2014-4343, CVE-2014-4344, CVE-2014-4345
MD5 | b34822d7ac81fe31a5839b4efb895fa8
Debian Security Advisory 3000-1
Posted Aug 11, 2014
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3000-1 - Several vulnerabilities were discovered in krb5, the MIT implementation of Kerberos.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2014-4341, CVE-2014-4342, CVE-2014-4343, CVE-2014-4344, CVE-2014-4345
MD5 | e56a2c4abed937a19a110da6304ba0a2
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