CVE-2022-3786

Description

A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed a malicious certificate or for an application to continue certificate verification despite failure to construct a path to a trusted issuer. An attacker can craft a malicious email address in a certificate to overflow an arbitrary number of bytes containing the `.' character (decimal 46) on the stack. This buffer overflow could result in a crash (causing a denial of service). In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects.

From the Tenable Blog

CVE-2022-3786 and CVE-2022-3602: OpenSSL Patches Two High Severity Vulnerabilities

Published: 2022-11-01

OpenSSL has patched two vulnerabilities, pivoting from its earlier announcement, in version 3.0.7.

References

• Advisories
• References
• Tenable Blogs
• More

Details

Source: Mitre, NVD

Named Vulnerability: SpookySSLNamed Vulnerability: OpenSSL Buffer Overflow

Risk Information

CVSS v2

CVSS v3

EPSS