CVE-2017-8301

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.

Category

5.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.21%
Third-Party Advisory seclists.org Third-Party Advisory securityfocus.com Third-Party Advisory github.com Third-Party Advisory nginx.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://seclists.org/oss-sec/2017/q2/145 third party advisory mailing list
https://github.com/libressl-portable/portable/issues/307 issue tracking third party advisory patch
https://trac.nginx.org/nginx/ticket/1257 issue tracking third party advisory patch
http://www.securityfocus.com/bid/98076 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-8301?
CVE-2017-8301 has been scored as a medium severity vulnerability.
How to fix CVE-2017-8301?
To fix CVE-2017-8301, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-8301 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-8301 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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