CVE-2020-7043 — Improper Certificate Validation in Project Openfortivpn
Severity
9.1CRITICALNVD
EPSS
0.5%
top 35.51%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedFeb 27
Latest updateMay 24
Description
An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL before 1.0.2. tunnel.c mishandles certificate validation because hostname comparisons do not consider '\0' characters, as demonstrated by a good.example.com\x00evil.example.com attack.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NExploitability: 3.9 | Impact: 5.2
Affected Packages4 packages
Also affects: Fedora 30, 31, 32
Patches
🔴Vulnerability Details
3📋Vendor Advisories
1Debian▶
CVE-2020-7043: openfortivpn - An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL before 1.0...↗2020