An attacker might be able to trigger a use-after-free by sending crafted DNS queries to a DNSdist using the DNSQuestion:getEDNSOptions method in custom Lua code. In some cases DNSQuestion:getEDNSOptions might refer to a version of the DNS packet that has been modified, thus triggering a use-after-free and potentially a crash resulting in denial of service.
Exploitability
AV:NAC:HPR:NUI:NScope
S:UImpact
C:LI:NA:L4.8/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L