CVE-2017-15088
9.8
CRITICAL · CVSS 3.1 · EPSS 8.3% (pctl 95)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 8.3% — more likely to be exploited than 95% of all CVEs |
| Weakness | CWE-121 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2017-11-23 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| mit | kerberos 5 |
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
- 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
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