X.509 Certificate Validation Issue in Lua-OpenSSL by Zhaozg
CVE-2020-9432

9.1CRITICAL

Key Information:

Vendor

Lua-OpenSSL Project

Status
Lua-OpenSSL
Vendor
CVE Published:
27 February 2020

What is CVE-2020-9432?

The lua_openssl library has a flaw in the openssl_x509_check_host function that improperly handles X.509 certificate validation. This occurs due to the function's reliance on lua_pushboolean for certain return values that are not strictly boolean. As a result, this vulnerability may allow attackers to bypass proper certificate validation checks.

References

https://github.com/zhaozg/lua-openssl/commit/a6dc186dd4b6...
x_refsource_MISC

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.