NVD

CVE-2017-7562 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

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.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: 6.5 MEDIUM

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Nist CVSS score does not match with CNA score

CNA: Red Hat, Inc.

Base Score: 6.5 MEDIUM

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 4.0 MEDIUM

Vector: (AV:N/AC:L/Au:S/C:N/I:P/A:N)

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink	Resource
http://www.securityfocus.com/bid/100511	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0666	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7562	Issue Tracking Patch Third Party Advisory
https://github.com/krb5/krb5/pull/694	Patch Third Party Advisory
https://github.com/krb5/krb5/pull/694/commits/1de6ca2f2eb1fdbab51f1549a25a6903aefcc196	Third Party Advisory
https://github.com/krb5/krb5/pull/694/commits/50fe4074f188c2d4da0c421e96553acea8378db2	Third Party Advisory
https://github.com/krb5/krb5/pull/694/commits/b7af544e50a4d8291524f590e20dd44430bf627d	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-287	Improper Authentication	NIST Red Hat, Inc.
CWE-295	Improper Certificate Validation	Red Hat, Inc.

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

7 change records found show changes

CVE Modified by Red Hat, Inc. 2/12/2023 6:31:27 PM

Action	Type	Old Value	New Value
Added	CWE		Red Hat, Inc. CWE-287
Added	CWE		Red Hat, Inc. CWE-295
Changed	Description	An authentication bypass flaw was found in the way krb5's certauth interface 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.	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.
Removed	Reference	https://access.redhat.com/security/cve/CVE-2017-7562 [No Types Assigned]
Removed	Reference	https://bugzilla.redhat.com/show_bug.cgi?id=1485510 [No Types Assigned]

CVE Modified by Red Hat, Inc. 2/02/2023 10:17:27 AM

Action	Type	Old Value	New Value
Removed	CWE	Red Hat, Inc. CWE-287
Removed	CWE	Red Hat, Inc. CWE-295
Changed	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.	An authentication bypass flaw was found in the way krb5's certauth interface 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.
Added	Reference		https://access.redhat.com/security/cve/CVE-2017-7562 [No Types Assigned]
Added	Reference		https://bugzilla.redhat.com/show_bug.cgi?id=1485510 [No Types Assigned]

Initial Analysis by NIST 9/21/2018 3:23:34 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		OR cpe:2.3:a:mit:kerberos::::::::* versions up to (excluding) 5-1.16.1
Added	CPE Configuration		OR cpe:2.3:o:redhat:enterprise_linux:7.0::::::: cpe:2.3:o:redhat:enterprise_linux_desktop:7.0::::::: cpe:2.3:o:redhat:enterprise_linux_server:7.0::::::: cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:::::::
Added	CVSS V2		(AV:N/AC:L/Au:S/C:N/I:P/A:N)
Added	CVSS V3		AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Added	CWE		CWE-287
Changed	Reference Type	http://www.securityfocus.com/bid/100511 No Types Assigned	http://www.securityfocus.com/bid/100511 Third Party Advisory, VDB Entry
Changed	Reference Type	https://access.redhat.com/errata/RHSA-2018:0666 No Types Assigned	https://access.redhat.com/errata/RHSA-2018:0666 Third Party Advisory
Changed	Reference Type	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7562 No Types Assigned	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7562 Issue Tracking, Patch, Third Party Advisory
Changed	Reference Type	https://github.com/krb5/krb5/pull/694 No Types Assigned	https://github.com/krb5/krb5/pull/694 Patch, Third Party Advisory
Changed	Reference Type	https://github.com/krb5/krb5/pull/694/commits/1de6ca2f2eb1fdbab51f1549a25a6903aefcc196 No Types Assigned	https://github.com/krb5/krb5/pull/694/commits/1de6ca2f2eb1fdbab51f1549a25a6903aefcc196 Third Party Advisory
Changed	Reference Type	https://github.com/krb5/krb5/pull/694/commits/50fe4074f188c2d4da0c421e96553acea8378db2 No Types Assigned	https://github.com/krb5/krb5/pull/694/commits/50fe4074f188c2d4da0c421e96553acea8378db2 Third Party Advisory
Changed	Reference Type	https://github.com/krb5/krb5/pull/694/commits/b7af544e50a4d8291524f590e20dd44430bf627d No Types Assigned	https://github.com/krb5/krb5/pull/694/commits/b7af544e50a4d8291524f590e20dd44430bf627d Third Party Advisory

Quick Info

CVE Dictionary Entry:
CVE-2017-7562
NVD Published Date:
07/26/2018
NVD Last Modified:
02/12/2023
Source:
Red Hat, Inc.

You are viewing this page in an unauthorized frame window.

Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2017-7562 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Change History

CVE Modified by Red Hat, Inc. 5/14/2024 12:45:26 AM

CVE Modified by Red Hat, Inc. 2/12/2023 6:31:27 PM

CVE Modified by Red Hat, Inc. 2/02/2023 10:17:27 AM

Modified Analysis by NIST 1/21/2020 11:48:27 AM

CVE Modified by Red Hat, Inc. 10/09/2019 7:29:47 PM

Initial Analysis by NIST 9/21/2018 3:23:34 PM

CVE Modified by Red Hat, Inc. 7/27/2018 9:29:05 PM

Quick Info