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Vulnerability of OpenSMTPD: NULL pointer dereference via lka_filter.c

Synthesis of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via lka_filter.c of OpenSMTPD, in order to trigger a denial of service.
Vulnerable systems: Fedora.
Severity of this threat: 3/4.
Creation date: 01/02/2021.
Références of this weakness: CVE-2020-35680, FEDORA-2021-71fbdecdf8, FEDORA-2021-848fd34b0b, VIGILANCE-VUL-34442.

Description of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via lka_filter.c of Open...
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This computer vulnerability announce impacts software or systems such as Fedora.

Our Vigil@nce team determined that the severity of this cybersecurity bulletin is important.

The trust level is of type confirmed by the editor, with an origin of internet client.

An attacker with a expert ability can exploit this threat alert.

Solutions for this threat 

This vulnerability workaround will be public soon.
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