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Add CVE-2022-4203 for openssl-src (#1577)
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```toml | ||
[advisory] | ||
id = "RUSTSEC-0000-0000" | ||
package = "openssl-src" | ||
aliases = ["CVE-2022-4203"] | ||
categories = ["denial-of-service", "memory-exposure"] | ||
date = "2023-02-07" | ||
url = "https://www.openssl.org/news/secadv/20230207.txt" | ||
[versions] | ||
patched = [">= 300.0.12"] | ||
unaffected = ["< 300.0.0"] | ||
``` | ||
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# X.509 Name Constraints Read Buffer Overflow | ||
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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. | ||
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The read buffer overrun might result in a crash which could lead to | ||
a denial of service attack. In theory it could also result in the disclosure | ||
of private memory contents (such as private keys, or sensitive plaintext) | ||
although we are not aware of any working exploit leading to memory | ||
contents disclosure as of the time of release of this advisory. | ||
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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. |