Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openssl | Openssl | >= 3.0.0, < 3.0.7 |
| Fedoraproject | Fedora | 36 |
| Nodejs | Node.Js | >= 18.0.0, < 18.11.0 |
Related Weaknesses (CWE)
References
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=c42165b5706e42f67efPatchVendor Advisory
- https://www.openssl.org/news/secadv/20221101.txtVendor Advisory
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=c42165b5706e42f67efPatchVendor Advisory
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00789.
- https://www.kb.cert.org/vuls/id/794340
- https://www.openssl.org/news/secadv/20221101.txtVendor Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-408105.html
FAQ
What is CVE-2022-3786?
CVE-2022-3786 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...
How severe is CVE-2022-3786?
CVE-2022-3786 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-3786?
Check the references section above for vendor advisories and patch information. Affected products include: Openssl Openssl, Fedoraproject Fedora, Nodejs Node.Js.