Vulnerability in Lua-Openssl Project
CVE-2020-9432
openssl_x509_check_host in lua-openssl 0.7.7-1 mishandles X.509 certificate validation because it uses lua_pushboolean for certain non-boolean return values.
Vulnerability class: Improper Certificate Validation
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.008 (56.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Lua-Openssl Project — versions 0.7.7-1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/zhaozg/lua-openssl/commit/a6dc186dd4b6b9e329a93cca3e7e3cfccfdf3cca (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-9432?
- CVE-2020-9432 is a critical-severity vulnerability in Lua-Openssl Project, classified under Improper Certificate Validation. CVSS score: 9.1/10. Published 2020-02-27.
- How severe is CVE-2020-9432?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2020-9432 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.