Vulnerability Monitor

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CVE-2017-15088

plugins/preauth/pkinit/pkinit_crypto_openssl.c in MIT Kerberos 5 (aka krb5) through 1.15.2 mishandles Distinguished Name (DN) fields, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow and application crash) in situations involving untrusted X.509 data, related to the get_matching_data and X509_NAME_oneline_ex functions. NOTE: this has security relevance only in use cases outside of the MIT Kerberos distribution, e.g., the use of get_matching_data in KDC certauth plugin code that is specific to Red Hat.

Published

2017-11-23T17:29:00.353

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

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

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

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Secondary
CWE-121
Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mit	kerberos_5	≤ 1.15.2	Yes

References

http://www.securityfocus.com/bid/101594 Third Party Advisory, VDB Entry ([email protected])
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=871698 Issue Tracking, Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1504045 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://github.com/krb5/krb5/commit/fbb687db1088ddd894d975996e5f6a4252b9a2b4 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://github.com/krb5/krb5/pull/707 Patch, Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/101594 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=871698 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1504045 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/krb5/krb5/commit/fbb687db1088ddd894d975996e5f6a4252b9a2b4 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/krb5/krb5/pull/707 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)