Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

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 verification callback returns 1, as demonstrated by acceptance of invalid certificates by nginx.

Published

2017-04-27T17:59:00.187

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 5.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:H/Au:N/C:N/I:P/A:N

Access Vector: NETWORK
Access Complexity: HIGH
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

4.9

Impact Score

2.9

Weaknesses

Type: Primary
CWE-295

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	openbsd	libressl	2.5.1	Yes
Application	openbsd	libressl	2.5.2	Yes
Application	openbsd	libressl	2.5.3	Yes

References

http://seclists.org/oss-sec/2017/q2/145 Mailing List, Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/98076 Third Party Advisory, VDB Entry ([email protected])
https://github.com/libressl-portable/portable/issues/307 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://trac.nginx.org/nginx/ticket/1257 Issue Tracking, Patch, Third Party Advisory ([email protected])
http://seclists.org/oss-sec/2017/q2/145 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/98076 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/libressl-portable/portable/issues/307 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://trac.nginx.org/nginx/ticket/1257 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)