UBUNTU-CVE-2020-7043
- Source
- https://ubuntu.com/security/CVE-2020-7043
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-7043.json
- JSON Data
- https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-7043
- Upstream
- Published
- 2020-02-27T18:15:00Z
- Modified
- 2025-07-18T16:45:44Z
- Severity
-
- 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- Details
-
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.
- References
-
- https://ubuntu.com/security/CVE-2020-7043
- https://github.com/adrienverge/openfortivpn/issues/536
- https://github.com/adrienverge/openfortivpn/commit/6328a070ddaab16faaf008cb9a8a62439c30f2a8
- https://github.com/adrienverge/openfortivpn/commit/cd9368c6a1b4ef91d77bb3fdbe2e5bc34aa6f4c4
- https://www.cve.org/CVERecord?id=CVE-2020-7043