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CVE-2014-9423

Status Candidate

Overview

The svcauth_gss_accept_sec_context function in lib/rpc/svc_auth_gss.c in MIT Kerberos 5 (aka krb5) 1.11.x through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 transmits uninitialized interposer data to clients, which allows remote attackers to obtain sensitive information from process heap memory by sniffing the network for data in a handle field.

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
SHA-256 | 8fb3cb2b9059c57c7254cbf03e0d41bd0654d31056df1eba6018ce76a9148bb1
Ubuntu Security Notice USN-2498-1
Posted Feb 11, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2498-1 - 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. 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. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2014-5351, CVE-2014-5352, CVE-2014-5353, CVE-2014-5354, CVE-2014-9421, CVE-2014-9422, CVE-2014-9423
SHA-256 | 14cf04451fcc79abacd9b37fd5284879a17bc1bb703511b11b1aa1544e5c6ec3
Debian Security Advisory 3153-1
Posted Feb 4, 2015
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3153-1 - Multiples vulnerabilities have been found in krb5, the MIT implementation of Kerberos.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2014-5352, CVE-2014-9421, CVE-2014-9422, CVE-2014-9423
SHA-256 | ecee120847457717a01fd2a9987ef675a6d879e4f16c09674711b8939feb31a6
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