CVE Catalog

CVE-2022-4991

HighCVSS 7.4
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.25%

17th percentile - higher than 17% of all known CVEs

Summary

Tychon includes an OpenSSL component that specifies an OPENSSLDIR variable as a subdirectory that may be controllable by an unprivileged user on Windows. Tychon contains a privileged service that uses this OpenSSL component. A user who can place a specially-crafted openssl.cnf file at an appropriate path may be able to achieve arbitrary code execution with SYSTEM privileges.

Risk Assessment

The risk is privilege escalation to SYSTEM by an unprivileged user, potentially leading to full system compromise.

Recommendation

Update Tychon to a version that does not use a user-controllable subdirectory for OPENSSLDIR, or properly secure the path.

Related vulnerabilities

Original NVD description (English source)

Tychon includes an OpenSSL component that specifies an OPENSSLDIR variable as a subdirectory that may be controllable by an unprivileged user on Windows. Tychon contains a privileged service that uses this OpenSSL component. A user who can place a specially-crafted openssl.cnf file at an appropriate path may be able to achieve arbitrary code execution with SYSTEM privileges.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS