PT-2014-1774 · Mit+6 · Mit Kerberos 5+6

Published 2014-07-20 · Updated 2024-06-15 · CVE-2014-4344

Positive Technologies (AI Summary)

CVSS v2.0

8.5

High

Base vector

AV:N/AC:M/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions MIT Kerberos 5 (aka krb5) versions 1.5.x through 1.12.x before 1.12.2

Description The issue allows remote attackers to cause a denial of service, resulting in a NULL pointer dereference and application crash, via an empty continuation token during a SPNEGO negotiation. This can be exploited by an unauthenticated or partially authenticated remote attacker by sending an empty token as the second or later context token from initiator to acceptor. The exploitation of this issue may lead to a violation of confidentiality, integrity, and availability of protected information.

Recommendations For versions 1.5.x through 1.12.x before 1.12.2, update to version 1.12.2 or later to resolve the issue. As a temporary workaround, consider restricting access to the SPNEGO negotiation functionality until a patch is available.

Fix

DoS

NULL Pointer Dereference

Double Free

Weakness Enumeration

CWE-476

CWE-415

Related Identifiers

ALT-PU-2014-2418

BDU:2015-01984

CESA-2014_1389

CESA-2015_0439

CVE-2014-4344

DLA-37-1

DSA-3000-1

MGASA-2014-0345

OPENSUSE-SU-2024:10004-1

RHSA-2014:1245

RHSA-2014:1389

RHSA-2014_1245

RHSA-2014_1389

RHSA-2015:0439

RHSA-2015_0439

USN-2310-1

Affected Products

Alt Linux

Centos

Ibm Aix

Mit Kerberos 5

Red Hat

Suse

Ubuntu

References · 106

• https://github.com/krb5/krb5/commit/a7886f0ed1277c69142b14a2c6629175a6331edc · Patch
• https://ubuntu.com/security/CVE-2013-6800 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2014-4344 · Security Note
• https://osv.dev/vulnerability/CVE-2014-4344 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4344 · Security Note
• http://rhn.redhat.com/errata/RHSA-2015-0439.html · Vendor Advisory
• http://debian.org/security/2014/dsa-3000 · Vendor Advisory
• https://ubuntu.com/security/CVE-2014-4344 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:10004-1 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2015-0439.html · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4342 · Security Note
• https://ubuntu.com/security/notices/USN-2310-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-2310-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2014-4343 · Vendor Advisory
• https://ubuntu.com/security/CVE-2014-4341 · Vendor Advisory