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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2017-15088
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2017-15088.html
Vendor advisory: secalert@redhat.com — https://github.com/krb5/krb5/pull/707
Vendor advisory: secalert@redhat.com — https://github.com/krb5/krb5/commit/fbb687db1088ddd894d975996e5f6a4252b9a2b4
Vendor advisory: secalert@redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=1504045
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | affected | | |
| sles | affected | | |
| debian | bookworm | fixed | 1.15.2-2 |
| debian | bullseye | fixed | 1.15.2-2 |
| debian | forky | fixed | 1.15.2-2 |
| debian | sid | fixed | 1.15.2-2 |
| debian | trixie | fixed | 1.15.2-2 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| mit | kerberos_5 | {"endIncluding":"1.15.2"} | |
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
- https://www.suse.com/security/cve/CVE-2017-15088.html
- https://security-tracker.debian.org/tracker/CVE-2017-15088
CWEs
CWE-121 CWE-119
Verify integrity in audit chain (admin only). AS-IS.