Fedora 29 : krb5 (2019-dc4e1d0fb6)

Fix KDC crash when logging PKINIT enctypes CVE-2019-14844 This is a purely denial-of-service issue, though it is unauthenticated, and is unlikely to trigger by accident. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website...

Debian DSA-4455-1 : heimdal - security update

Several vulnerabilities were discovered in Heimdal, an implementation of Kerberos 5 that aims to be compatible with MIT Kerberos. - CVE-2018-16860 Isaac Boukris and Andrew Bartlett discovered that Heimdal was susceptible to man-in-the-middle attacks caused by incomplete checksum validation. Detai...

Debian: Security Advisory (DSA-4455-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2019 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

CVE-2019-12098

In the client side of Heimdal before 7.6.0, failure to verify anonymous PKINIT PA-PKINIT-KX key exchange permits a man-in-the-middle attack. This issue is in krb5initcredsstep in lib/krb5/initcredspw.c...

Design/Logic Flaw

In the client side of Heimdal before 7.6.0, failure to verify anonymous PKINIT PA-PKINIT-KX key exchange permits a man-in-the-middle attack. This issue is in krb5initcredsstep in lib/krb5/initcredspw.c...

CVE-2019-12098

In the client side of Heimdal before 7.6.0, failure to verify anonymous PKINIT PA-PKINIT-KX key exchange permits a man-in-the-middle attack. This issue is in krb5initcredsstep in lib/krb5/initcredspw.c...

CVE-2019-12098

In the client side of Heimdal before 7.6.0, failure to verify anonymous PKINIT PA-PKINIT-KX key exchange permits a man-in-the-middle attack. This issue is in krb5initcredsstep in lib/krb5/initcredspw.c...

CVE-2019-12098

CVE-2019-12098 affects Heimdal Kerberos 5 clients; the issue is failure to verify anonymous PKINIT KX (PA-PKINIT-KX) during the key exchange, enabling potential MITM. Public advisories indicate this was fixed in newer Heimdal releases (e.g., 7.6.0+ and later such as 7.7.0 in openSUSE/SUSE bundles...

CVE-2019-12098

In the client side of Heimdal before 7.6.0, failure to verify anonymous PKINIT PA-PKINIT-KX key exchange permits a man-in-the-middle attack. This issue is in krb5initcredsstep in lib/krb5/initcredspw.c...

CVE-2019-12098

In the client side of Heimdal before 7.6.0, failure to verify anonymous PKINIT PA-PKINIT-KX key exchange permits a man-in-the-middle attack. This issue is in krb5initcredsstep in lib/krb5/initcredspw.c...

Heimdal man-in-the-middle attack vulnerability

Heimdal is a Kerberos 5 implementation. A security vulnerability in the krb5initcredsstep file in lib/krb5/initcredspw.c in versions of Heimdal prior to 7.6.0 stems from the program failing to validate a change to the PA-PKINIT-KX key when an anonymous PKINIT is used. An attacker could exploit th...

Denial Of Service (DoS)

Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third-party, the Key Distribution Center KDC. When a client attempts to use PKINIT to obtain credentials from the KDC, the client can specify, using ...

Denial Of Service (DoS)

krb5 is vulnerable to denial of service DoS attacks. The vulnerability exists as the pkinitserverreturnpadata function in plugins/preauth/pkinit/pkinitsrv.c in the PKINIT implementation in the Key Distribution Center KDC in MIT Kerberos 5 aka krb5 before 1.10.4 attempts to find an agility KDF...

SUSE SLED15 / SLES15 Security Update : samba (SUSE-SU-2018:4066-1)

This update for samba fixes the following issues : Update to samba version 4.7.11. Security issues fixed : CVE-2018-14629: Fixed CNAME loops in Samba AD DC DNS server bsc1116319. CVE-2018-16841: Fixed segfault on PKINIT when mis-matching principal bsc1116320. CVE-2018-16851: Fixed NULL pointer...

Double-free in Samba AD DC KDC with PKINIT

Description When configured to accept smart-card authentication, Samba's KDC will call tallocfree twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is...

Scientific Linux Security Update : krb5 on SL7.x x86_64 (20181030)

Security Fixes : - krb5: null dereference in kadmind or DN container check bypass by supplying special crafted data CVE-2018-5729 - krb5: DN container check bypass by supplying special crafted data CVE-2018-5730 C Tenable Network Security, Inc. The descriptive text is C Scientific Linux...

krb5 security, bug fix, and enhancement update

1.15.1-34 - In FIPS mode, add plaintext fallback for RC4 usages and taint - Resolves: 1570600 1.15.1-33 - Use SHA-256 instead of MD5 for audit ticket IDs - Resolves: 1570600 1.15.1-32 - Include preauth name in trace output if possible - Update cert generation scripts to work on modern openssl - F...

krb5 security, bug fix, and enhancement update

1.15.1-18 - Expose context errors in pkinitserverplugininit - Resolves: 1460089 1.15.1-17 - Drop certauth test changes that prevented runnig it - Resolves: 1498767 1.15.1-16 - Drop irrelevant DIR trigger logic - Resolves: 1431198 1.15.1-15 - Fix CVE-2017-7562 certauth eku bypass - Resolves: 14987...

CVE-2017-15088

A stack based buffer overflow was found in the getmatchingdata function, when reading the principal's certificate during pkinit preauthentication. If the Certifcate Authority's subject line is sufficiently long, an attacker able to have a specially crafted certificate signed could crash the...

Vulnerabilities of the Debian GNU/Linux operating system that allow a remote attacker to compromise the accessibility of protected information

The multiple vulnerabilities in the krb5-pkinit package of the Debian GNU/Linux operating system may lead to a violation of the accessibility of protected information. These vulnerabilities can be exploited remotely...