Medium severity · published Apr 27, 2017
CVE-2017-8301
LibreSSL 2.5.1 to 2.5.3 lacks TLS certificate verification if SSL_get_verify_result is relied upon for a later check of a verification result, in a use case where a user-provided…
5.3
CVSS
1%
EPSS
No
On KEV
Description
LibreSSL 2.5.1 to 2.5.3 lacks TLS certificate verification if SSL_get_verify_result is relied upon for a later check of a verification result, in a use case where a user-provided verification callback returns 1, as demonstrated by acceptance of invalid certificates by nginx.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 64% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Libressl · Openbsd
2.5.1; 2.5.2; 2.5.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-8301
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-8301
Mailing List
http://seclists.org/oss-sec/2017/q2/145
Third Party Advisory
http://www.securityfocus.com/bid/98076
Issue Tracking
https://github.com/libressl-portable/portable/issues/307
Issue Tracking
https://trac.nginx.org/nginx/ticket/1257
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