- Description
- Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 before 49.0.1 does not adequately account for host allocations when lifting guest values through the dynamically-typed Val API, bypassing the hostcall fuel limit. A malicious WebAssembly guest can return crafted values that allocate at least ~100x more host memory than tracked, causing denial of service.
- Source
- disclosure@vulncheck.com
- NVD status
- Deferred
CVSS 4.0
- Type
- Secondary
- Base score
- 1
- Impact score
- -
- Exploitability score
- -
- Vector string
- CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity
- LOW
CVSS 3.1
- Type
- Primary
- Base score
- 2.3
- Impact score
- 1.4
- Exploitability score
- 0.9
- Vector string
- CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L
- Severity
- LOW
- disclosure@vulncheck.com
- CWE-770
- Hype score
- Not currently trending