Vulnerability in Openfortivpn Project
CVE-2020-7043
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.
Vulnerability class: Improper Certificate Validation
EPSS: 0.025 (82.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Openfortivpn_project Openfortivpn
- Openssl
- Fedoraproject Fedora — versions 30, 31, 32
- Opensuse Backports_sle — versions 15.0
- Opensuse Leap — versions 15.1
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC, Issue Tracking)
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- cve@mitre.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7043?
- CVE-2020-7043 is a critical-severity vulnerability in Openfortivpn Project, classified under Improper Certificate Validation. CVSS score: 9.1/10. Published 2020-02-27.
- How severe is CVE-2020-7043?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2020-7043 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.