PT-2015-5837 · Mit+5 · Mit Kerberos 5+5

Greg Hudson · Published 2015-05-25 · Updated 2024-06-15 · CVE-2015-2694

Positive Technologies (AI Summary)

CVSS v2.0

5.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions MIT Kerberos 5 versions 1.12.x through 1.13.1

Description The issue allows remote attackers to bypass an intended preauthentication requirement. This can be achieved by providing either zero bytes of data or an arbitrary realm name. The problem is related to the kdcpreauth modules in MIT Kerberos 5, specifically in the plugins/preauth/otp/main.c and plugins/preauth/pkinit/pkinit srv.c files.

Recommendations For versions 1.12.x through 1.13.1, update to version 1.13.2 or later to resolve the issue. As a temporary workaround, consider restricting access to the kdcpreauth modules until a patch is available.

Fix

Weakness Enumeration

CWE-264

Related Identifiers

ALT-PU-2015-1898

CESA-2015_2154

CVE-2015-2694

OPENSUSE-SU-2024:10004-1

RHSA-2015:2154

RHSA-2015_2154

SUSE-SU-2015:1276-1

USN-2810-1

Affected Products

Alt Linux

Centos

Mit Kerberos 5

Red Hat

Suse

Ubuntu

References · 82

• https://github.com/krb5/krb5/commit/e3b5a5e5267818c97750b266df50b6a3d4649604 · Vendor Advisory
• https://ubuntu.com/security/CVE-2015-2695 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2015-2694 · Vendor Advisory
• https://ubuntu.com/security/CVE-2002-2443 · Vendor Advisory
• https://ubuntu.com/security/CVE-2015-2697 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2015-2154.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2015-2694 · Vendor Advisory
• https://ubuntu.com/security/CVE-2014-5355 · Vendor Advisory
• https://osv.dev/vulnerability/USN-2810-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2015:1276-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:10004-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2015-2694 · Security Note
• https://ubuntu.com/security/CVE-2015-2696 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2015-2694 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2015-2694 · Vendor Advisory