NVD - CVE-2017-11368

CVE-2017-11368 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.

Current Description

In MIT Kerberos 5 (aka krb5) 1.7 and later, an authenticated attacker can cause a KDC assertion failure by sending invalid S4U2Self or S4U2Proxy requests.

Source: MITRE
Description Last Modified: 08/09/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.5 MEDIUM
Vector: AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 2.8

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 4.0 MEDIUM
Vector: (AV:N/AC:L/Au:S/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.0

Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): Single
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
http://www.securityfocus.com/bid/100291	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0666
https://github.com/krb5/krb5/commit/ffb35baac6981f9e8914f8f3bffd37f284b85970	Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4HNWXM6OQU7G23MG7XWIOBRGP43ECLDT/	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBUTXMNZWMVJLQ4NDX5OQFPUVCJRLV3W/	Third Party Advisory

Technical Details

Vulnerability Type (View All)

Input Validation (CWE-20)

Vulnerable software and versions Switch to CPE 2.2

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

Change History

4 change records found - show changes

Reanalysis - 10/20/2017 1:42:19 PM

Action

Type

Old Value

New Value

Changed

CPE Configuration

Record truncated, showing 500 of 2481 characters. View Entire Change Record

OR
     *cpe:2.3:a:mit:kerberos:5-1.7:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.7.1:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.8:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.8.1:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.8.2:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.8.3:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.8.4:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.8.5:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.8.6:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.9:*:*:*:*

Record truncated, showing 500 of 2533 characters. View Entire Change Record

OR
     *cpe:2.3:a:mit:kerberos:5-1.7:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.7.1:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.8:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.8.1:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.8.2:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.8.3:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.8.4:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.8.5:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.8.6:*:*:*:*:*:*:*
     *cpe:2.3:a:mit:kerberos:5-1.9:*:*:*:*

Initial Analysis - 8/24/2017 12:50:19 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 2481 characters. View Entire Change Record OR cpe:2.3:a:mit:kerberos:5-1.7::::::: cpe:2.3:a:mit:kerberos:5-1.7.1::::::: cpe:2.3:a:mit:kerberos:5-1.8::::::: cpe:2.3:a:mit:kerberos:5-1.8.1::::::: cpe:2.3:a:mit:kerberos:5-1.8.2::::::: cpe:2.3:a:mit:kerberos:5-1.8.3::::::: cpe:2.3:a:mit:kerberos:5-1.8.4::::::: cpe:2.3:a:mit:kerberos:5-1.8.5::::::: cpe:2.3:a:mit:kerberos:5-1.8.6::::::: cpe:2.3:a:mit:kerberos:5-1.9::::*
Added	CPE Configuration		OR cpe:2.3:o:fedoraproject:fedora:25::::::: cpe:2.3:o:fedoraproject:fedora:26:::::::
Added	CVSS V2		(AV:N/AC:L/Au:S/C:N/I:N/A:P)
Added	CVSS V3		AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Added	CWE		CWE-20
Changed	Reference Type	http://www.securityfocus.com/bid/100291 No Types Assigned	http://www.securityfocus.com/bid/100291 Third Party Advisory, VDB Entry
Changed	Reference Type	https://github.com/krb5/krb5/commit/ffb35baac6981f9e8914f8f3bffd37f284b85970 No Types Assigned	https://github.com/krb5/krb5/commit/ffb35baac6981f9e8914f8f3bffd37f284b85970 Patch, Third Party Advisory
Changed	Reference Type	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4HNWXM6OQU7G23MG7XWIOBRGP43ECLDT/ No Types Assigned	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4HNWXM6OQU7G23MG7XWIOBRGP43ECLDT/ Third Party Advisory
Changed	Reference Type	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBUTXMNZWMVJLQ4NDX5OQFPUVCJRLV3W/ No Types Assigned	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBUTXMNZWMVJLQ4NDX5OQFPUVCJRLV3W/ Third Party Advisory

Quick Info

CVE Dictionary Entry:
CVE-2017-11368
NVD Published Date:
08/09/2017
NVD Last Modified:
04/11/2018

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