Vulnerability Monitor

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CVE-2015-2694

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.

Security Impact Summary

CVE-2015-2694 is a security vulnerability that . Impacting 1 product from mit organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2015, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2015-05-25T19:59:02.407

Last Modified

2026-05-06T22:30:45.220

Status

Modified

Source

[email protected]

Severity

CVSSv2: 5.8 (MEDIUM)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

4.9

Weaknesses

Type: Primary
CWE-264

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mit	kerberos_5	1.12	Yes
Application	mit	kerberos_5	1.12.1	Yes
Application	mit	kerberos_5	1.12.2	Yes
Application	mit	kerberos_5	1.12.3	Yes
Application	mit	kerberos_5	1.13	Yes
Application	mit	kerberos_5	1.13.1	Yes

References

http://krbdev.mit.edu/rt/Ticket/Display.html?id=8160 Vendor Advisory ([email protected])
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html ([email protected])
http://www.securityfocus.com/bid/74824 ([email protected])
http://www.ubuntu.com/usn/USN-2810-1 ([email protected])
https://github.com/krb5/krb5/commit/e3b5a5e5267818c97750b266df50b6a3d4649604 Vendor Advisory ([email protected])
http://krbdev.mit.edu/rt/Ticket/Display.html?id=8160 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/74824 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2810-1 (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/krb5/krb5/commit/e3b5a5e5267818c97750b266df50b6a3d4649604 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For mit's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.