Vulnerability Monitor

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CVE-2015-8631

Multiple memory leaks in kadmin/server/server_stubs.c in kadmind in MIT Kerberos 5 (aka krb5) before 1.13.4 and 1.14.x before 1.14.1 allow remote authenticated users to cause a denial of service (memory consumption) via a request specifying a NULL principal name.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 11 products from mit, from opensuse, from opensuse and 8 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2016, 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

2016-02-13T02:59:02.023

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

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

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

Exploitability Score

8.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-772

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mit	kerberos_5	< 1.13.4	Yes
Application	mit	kerberos_5	< 1.14.1	Yes
Operating System	opensuse	leap	42.1	Yes
Operating System	opensuse	opensuse	13.2	Yes
Operating System	debian	debian_linux	7.0	Yes
Operating System	debian	debian_linux	8.0	Yes
Operating System	redhat	enterprise_linux_desktop	6.0	Yes
Operating System	redhat	enterprise_linux_desktop	7.0	Yes
Operating System	redhat	enterprise_linux_eus	6.7	Yes
Operating System	redhat	enterprise_linux_eus	7.2	Yes
Operating System	redhat	enterprise_linux_eus	7.3	Yes
Operating System	redhat	enterprise_linux_eus	7.4	Yes
Operating System	redhat	enterprise_linux_eus	7.5	Yes
Operating System	redhat	enterprise_linux_eus	7.6	Yes
Operating System	redhat	enterprise_linux_eus	7.7	Yes
Operating System	redhat	enterprise_linux_server	6.0	Yes
Operating System	redhat	enterprise_linux_server	7.0	Yes
Operating System	redhat	enterprise_linux_server_aus	7.2	Yes
Operating System	redhat	enterprise_linux_server_aus	7.3	Yes
Operating System	redhat	enterprise_linux_server_aus	7.4	Yes
Operating System	redhat	enterprise_linux_server_aus	7.6	Yes
Operating System	redhat	enterprise_linux_server_aus	7.7	Yes
Operating System	redhat	enterprise_linux_server_tus	7.2	Yes
Operating System	redhat	enterprise_linux_server_tus	7.3	Yes
Operating System	redhat	enterprise_linux_server_tus	7.6	Yes
Operating System	redhat	enterprise_linux_server_tus	7.7	Yes
Operating System	redhat	enterprise_linux_workstation	6.0	Yes
Operating System	redhat	enterprise_linux_workstation	7.0	Yes
Operating System	oracle	linux	6	Yes
Operating System	oracle	linux	7	Yes

References

http://krbdev.mit.edu/rt/Ticket/Display.html?id=8343 Vendor Advisory ([email protected])
http://lists.opensuse.org/opensuse-updates/2016-02/msg00059.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-updates/2016-02/msg00110.html Mailing List, Third Party Advisory ([email protected])
http://rhn.redhat.com/errata/RHSA-2016-0493.html Third Party Advisory ([email protected])
http://rhn.redhat.com/errata/RHSA-2016-0532.html Third Party Advisory ([email protected])
http://www.debian.org/security/2016/dsa-3466 Third Party Advisory ([email protected])
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html Third Party Advisory ([email protected])
http://www.securitytracker.com/id/1034916 Third Party Advisory, VDB Entry ([email protected])
https://github.com/krb5/krb5/commit/83ed75feba32e46f736fcce0d96a0445f29b96c2 Patch, Third Party Advisory ([email protected])
http://krbdev.mit.edu/rt/Ticket/Display.html?id=8343 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-updates/2016-02/msg00059.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-updates/2016-02/msg00110.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2016-0493.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2016-0532.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2016/dsa-3466 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1034916 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/krb5/krb5/commit/83ed75feba32e46f736fcce0d96a0445f29b96c2 Patch, Third Party 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.