Unencrypted Network Exposure of Internal Memory via Crafted Invalid Domain Names

Unencrypted Network Exposure of Internal Memory via Crafted Invalid Domain Names

CVE-2021-23386 · MEDIUM Severity

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

This affects the package dns-packet before 5.2.2. It creates buffers with allocUnsafe and does not always fill them before forming network packets. This can expose internal application memory over unencrypted network when querying crafted invalid domain names.

Learn more about our Internal Network Penetration Testing.