CVE-2017-15088

CRITICAL
9.8
CVSS Score
Published: November 23, 2017 at 05:00 PM UTC
Updated: June 17, 2026 at 01:07 AM UTC
1 product affected across 1 vendorKerberos 5

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Severity
CRITICAL9.8
Exploit prediction
EPSS 8%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.15.2

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (5)

VDB Entryx_refsource_BIDThird Party Advisory
http://www.securityfocus.com/bid/101594
x_refsource_CONFIRMIssue TrackingThird Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=871698
x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1504045
x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
https://github.com/krb5/krb5/commit/fbb687db1088ddd894d975996e5f6a4252b9a2b4
x_refsource_CONFIRMPatchThird Party Advisory
https://github.com/krb5/krb5/pull/707

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-121CWE-119

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