CVE-2022-3786
Last modified
CVE-2022-3786 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 91.15% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openssl | Openssl | >= 3.0.0, < 3.0.7 |
| Fedoraproject | Fedora | 36 |
| Fedoraproject | Fedora | 37 |
| Nodejs | Node.Js | >= 18.0.0, < 18.11.0 |
| Nodejs | Node.Js | 18.12.0 |
| Nodejs | Node.Js | 19.0.0 |
References
- https://www.openssl.org/news/secadv/20221101.txtVendor Advisory
- https://www.openssl.org/news/secadv/20221101.txtVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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