CVE-2017-15088

HIGH

Description

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.

References

http://www.securityfocus.com/bid/101594

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=871698

https://bugzilla.redhat.com/show_bug.cgi?id=1504045

https://github.com/krb5/krb5/commit/fbb687db1088ddd894d975996e5f6a4252b9a2b4

https://github.com/krb5/krb5/pull/707

Details

Source: MITRE

Published: 2017-11-23

Updated: 2019-10-09

Type: CWE-119

Risk Information

CVSS v2.0

Base Score: 7.5

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

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3.0

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL