Vigil@nce - ProFTPD: NULL pointer dereference via sk_X509_REVOKED_value tls_verify_crl
January 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
Impacted products: Debian, Fedora, openSUSE Leap, ProFTPD, SLES.
Consequences: denial of service on service.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 27/11/2019.
DESCRIPTION OF THE VULNERABILITY
An attacker can force a NULL pointer to be dereferenced via sk_X509_REVOKED_value() tls_verify_crl() of ProFTPD, in order to trigger a denial of service.
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