CVE-2017-15088
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (8.30%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 8.30% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-121, CWE-119
- Affected
- mit/kerberos 5
- Source
- secalert@redhat.com
EPSS 8.3% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/101594Third Party Advisory, VDB Entry
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=871698Issue Tracking, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1504045Issue Tracking, Patch, Third Party Advisory
- https://github.com/krb5/krb5/commit/fbb687db1088ddd894d975996e5f6a4252b9a2b4Issue Tracking, Patch, Third Party Advisory
- https://github.com/krb5/krb5/pull/707Patch, Third Party Advisory
- http://www.securityfocus.com/bid/101594Third Party Advisory, VDB Entry
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=871698Issue Tracking, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1504045Issue Tracking, Patch, Third Party Advisory
- https://github.com/krb5/krb5/commit/fbb687db1088ddd894d975996e5f6a4252b9a2b4Issue Tracking, Patch, Third Party Advisory
- https://github.com/krb5/krb5/pull/707Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.