CVE-2017-15088

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.

How to fix CVE-2017-15088

To remediate CVE-2017-15088, upgrade the affected package to a fixed version below.

• —upgrade to 1.15.3-r0 or later
• —upgrade to 1.15.2-2 or later

Is CVE-2017-15088 being exploited?

Low — EPSS is 1.3%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0, < 1.15.3-r0
• from 0, < 1.15.2-2

CVSS scores

References (2)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2017-15088
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2017-15088