Auth bypass in Wasmcloud Host Runtime
CVE-2022-21707
wasmCloud Host Runtime is a server process that securely hosts and provides dispatch for web assembly (WASM) actors and capability providers. In versions prior to 0.52.2 actors can bypass capability authorization. Actors are normally required to declare their capabilities for inbound invocations, but with this vulnerability actor capability claims are not verified upon receiving invocations. This compromises the security model for actors as they can receive unauthorized invocations from linked capability providers. The problem has been patched in versions `0.52.2` and greater. There is no workaround and users are advised to upgrade to an unaffected version as soon as possible.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N.
EPSS exploit prediction
EPSS: 0.008 (55.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Wasmcloud Host Runtime
- Wasmcloud Wasmcloud-Otp — versions < 0.52.2
Weakness classification (CWE)
References
- github.com/wasmCloud/wasmcloud-otp/security/advisories/GHSA-2cmx-rr54-88g5 (Third Party Advisory)
- github.com/wasmCloud/wasmcloud-otp/commit/fd07262074b98b06106a31fd1957dc2319d43… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-21707?
- CVE-2022-21707 is a medium-severity vulnerability in Wasmcloud Host Runtime, classified under Incorrect Authorization. CVSS score: 6.3/10. Published 2022-01-21.
- How severe is CVE-2022-21707?
- Medium severity. CVSS v3 base score is 6.3 out of 10.