Description (CNA)
OpenBMC's IPMI implementation, phosphor-net-ipmid, contains a logic flaw in which an unauthenticated client can force the RAKP Message 1 handler to return before it overwrites the authentication object's constructor defaults. The IPMI service then accepts a RAKP Message 3 whose HMAC is computed with the constant 20-byte 'userKey' initialized from the string '0penBmc' and an often-predictable 'bmcRandomNum'. Several downstream vendors implement phosphor-net-ipmid as their IPMI stack, such as NVIDIA and H3C.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| OpenBMC / phosphor-net-ipmid | affected 0 through ba6efc502e6b1fabb8ed1ca677ae5eedd64b6361 |
CWE
CWE-798, CWE-457
References
- https://www.runzero.com/advisories/openbmc-ipmi-auth-bypass-rakp-cve-2026-16141/
- https://www.runzero.com/blog/lights-out-exposed/
ADP enrichment
No English description supplied.
No references supplied.