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Critical severity · published Nov 23, 2017
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…
9.8
CVSS
8.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)8.3% · higher than 95% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
K5
Kerberos 5 · Mit
through 1.15.2 · source: NVD
Affected product
K5
Kerberos 5
Mit
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-15088
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-15088
Third Party Advisory
http://www.securityfocus.com/bid/101594
Issue Tracking
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=871698
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1504045
Issue Tracking
https://github.com/krb5/krb5/commit/fbb687db1088ddd894d975996e5f6a4252b9a2b4
Patch
https://github.com/krb5/krb5/pull/707
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