NULL Pointer Dereference

2024-08-2720:22:44

Veracode Vulnerability Database

sca.analysiscenter.veracode.com

fort

software

vulnerability

null pointer dereference

rpki

repository

trust anchor

rsync

rrdp

resource certificate

authority key identifier extension

keyidentifier

sanitizing

rpki relying party

crash

route origin validation

compromised routing

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

6.7

Confidence

High

JSON

Fort is vulnerable to NULL Pointer Dereference. The vulnerability is caused due to a malicious RPKI repository that descends from a (trusted) Trust Anchor can serve (via rsync or RRDP) a resource certificate containing an Authority Key Identifier extension that lacks the keyIdentifier field which Fort references without sanitizing it first. Because Fort is an RPKI Relying Party, a crash can lead to Route Origin Validation unavailability, which can lead to compromised routing.