National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2015-2694 Detail

Current Description

The kdcpreauth modules in MIT Kerberos 5 (aka krb5) 1.12.x and 1.13.x before 1.13.2 do not properly track whether a client's request has been validated, which allows remote attackers to bypass an intended preauthentication requirement by providing (1) zero bytes of data or (2) an arbitrary realm name, related to plugins/preauth/otp/main.c and plugins/preauth/pkinit/pkinit_srv.c.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 5.8 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:N) (V2 legend)
Impact Subscore: 4.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://krbdev.mit.edu/rt/Ticket/Display.html?id=8160 Vendor Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/74824
http://www.ubuntu.com/usn/USN-2810-1
https://github.com/krb5/krb5/commit/e3b5a5e5267818c97750b266df50b6a3d4649604 Vendor Advisory

Technical Details

Vulnerability Type (View All)

  • Permissions, Privileges, and Access Controls (CWE-264)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:mit:kerberos:5-1.12:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:mit:kerberos:5-1.12.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:mit:kerberos:5-1.12.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:mit:kerberos:5-1.12.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:mit:kerberos:5-1.13:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:mit:kerberos:5-1.13.1:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2015-2694
NVD Published Date:
05/25/2015
NVD Last Modified:
12/07/2016