CVE-2022-3786
HighSummary
Weryfikacja certyfikatów X.509 może być podatna na przepełnienie bufora podczas sprawdzania ograniczeń nazw. Atakujący może stworzyć złośliwy adres e-mail w certyfikacie, co prowadzi do przepełnienia bufora na stosie.
Risk Assessment
Przepełnienie bufora może spowodować awarię aplikacji, co prowadzi do odmowy usługi. Może to wystąpić zarówno w klientach TLS, jak i serwerach TLS, co stwarza poważne zagrożenie dla dostępności usług.
Recommendation
Zaleca się aktualizację oprogramowania do najnowszej wersji, aby załatać tę podatność oraz monitorowanie połączeń TLS w celu wykrywania potencjalnych ataków.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

