CVE-2017-7562

MEDIUM

Red Hat Enterprise Linux - Authentication Bypass via Improper Certificate Validation

Title source: llm
STIX 2.1

Description

An authentication bypass flaw was found in the way krb5's certauth interface before 1.16.1 handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances.

References (7)

Core 7
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/100511
Patch, Third Party Advisory x_refsource_confirm
https://github.com/krb5/krb5/pull/694
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:0666
Issue Tracking, Patch, Third Party Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7562

Scores

CVSS v3 6.5
EPSS 0.0046
EPSS Percentile 64.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Details

CWE
CWE-295 CWE-287
Status published
Products (5)
mit/kerberos_5 1.0 - 1.16.1
redhat/enterprise_linux 7.0
redhat/enterprise_linux_desktop 7.0
redhat/enterprise_linux_server 7.0
redhat/enterprise_linux_workstation 7.0
Published Jul 26, 2018
Tracked Since Feb 18, 2026