Vigil@nce - ProFTPD: privilege escalation via CRL Entry Revoked Certificates tls_verify_crl
January 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer...
SYNTHESIS OF THE VULNERABILITY
Impacted products: Fedora, openSUSE Leap, ProFTPD, SLES.
Consequences: privileged access/rights, user access/rights.
Provenance: user account.
Confidence: confirmed by the editor (5/5).
Creation date: 27/11/2019.
DESCRIPTION OF THE VULNERABILITY
An attacker can bypass restrictions via CRL Entry Revoked Certificates tls_verify_crl() of ProFTPD, in order to escalate his privileges.
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