CVE-2022-4203: X.509 Name Constraints Read Buffer Overflow
First published: Wed Jan 25 2023(Updated: )
A flaw was found in Open SSL. A read 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 the malicious certificate or for the application to continue certificate verification despite failure to construct a path to a trusted issuer.
Credit: openssl-security@openssl.org openssl-security@openssl.org openssl-security@openssl.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/openssl | <1:3.0.1-47.el9_1 | 1:3.0.1-47.el9_1 |
| redhat/openssl | <1:3.0.1-46.el9_0 | 1:3.0.1-46.el9_0 |
| OpenSSL OpenSSL | >=3.0.0<3.0.8 | |
| rust/openssl-src | >=300.0.0<300.0.12 | 300.0.12 |
| debian/openssl | 1.1.1w-0+deb11u1 1.1.1n-0+deb11u5 3.0.14-1~deb12u1 3.0.14-1~deb12u2 3.3.2-1 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2022-4203 https://nvd.nist.gov/vuln/detail/CVE-2022-4203 https://www.openssl.org/news/secadv/20230207.txt
- https://bugzilla.redhat.com/show_bug.cgi?id=2164488
- https://access.redhat.com/errata/RHSA-2023:0946
- https://access.redhat.com/errata/RHSA-2023:1199
- https://access.redhat.com/security/cve/cve-2022-4203
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=c927a3492698c254637da836762f9b1f86cffabc
- https://www.openssl.org/news/secadv/20230207.txt
- https://security.gentoo.org/glsa/202402-08
- https://nvd.nist.gov/vuln/detail/CVE-2022-4203
- https://rustsec.org/advisories/RUSTSEC-2023-0008.html
- https://github.com/advisories/GHSA-w67w-mw4j-8qrv (Advisory)
- https://launchpad.net/bugs/cve/CVE-2022-4203
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167913
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167916
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2167912
- https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=c927a3492698c254637da836762f9b1f86cffabc
- https://security-tracker.debian.org/tracker/CVE-2022-4203
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-4203
- https://ubuntu.com/security/CVE-2022-4203
Frequently Asked Questions
What is CVE-2022-4203?
CVE-2022-4203 is a vulnerability in OpenSSL that allows a read buffer overrun in X.509 certificate verification.
How does CVE-2022-4203 occur?
CVE-2022-4203 occurs during name constraint checking in X.509 certificate verification.
What is the severity of CVE-2022-4203?
The severity of CVE-2022-4203 is medium with a severity value of 4.9.
Which versions of OpenSSL are affected by CVE-2022-4203?
OpenSSL versions 3.0.0 to 3.0.8 are affected by CVE-2022-4203.
How can I fix CVE-2022-4203?
To fix CVE-2022-4203, update OpenSSL to version 3.0.1-47.el9_1 or higher.
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