A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before proxying everything else a client sends to the server, potentially leading the client to terminate the NBD session. The highest threat from this vulnerability is to system availability.
The product establishes a communication channel with an endpoint and receives a message from that endpoint, but it does not sufficiently ensure that the message was not modified during transmission.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Nbdkit | Nbdkit_project | 1.11.8 (including) | 1.24.6 (excluding) |
| Nbdkit | Nbdkit_project | 1.25.1 (including) | 1.26.5 (excluding) |
| Nbdkit | Nbdkit_project | 1.27.1 (including) | 1.27.6 (excluding) |
| Advanced Virtualization for RHEL 8.5.0.Z | RedHat | virt:av-8050020220115095224.c5368500 | * |
| Advanced Virtualization for RHEL 8.5.0.Z | RedHat | virt-devel:av-8050020220115095224.c5368500 | * |
| Red Hat Enterprise Linux 8 | RedHat | virt-devel:rhel-8060020220408104655.d63f516d | * |
| Red Hat Enterprise Linux 8 | RedHat | virt:rhel-8060020220408104655.d63f516d | * |
| Nbdkit | Ubuntu | hirsute | * |
| Nbdkit | Ubuntu | impish | * |
| Nbdkit | Ubuntu | kinetic | * |
| Nbdkit | Ubuntu | lunar | * |
| Nbdkit | Ubuntu | mantic | * |
| Nbdkit | Ubuntu | trusty | * |
| Nbdkit | Ubuntu | xenial | * |