CVE-2021-45946 : Wasm3 0.5.0 has an out-of-bounds write in CompileBlock (called from Compile

Wasm3 0.5.0 has an out-of-bounds write in CompileBlock (called from Compile_LoopOrBlock and CompileBlockStatements).

Published 2022-01-01 00:15:08

Updated 2022-01-10 13:06:53

Source MITRE

View at NVD, CVE.org

Vulnerability category: Memory Corruption

Products affected by CVE-2021-45946

Wasm3 Project » Wasm3 » Version: 0.5.0
cpe:2.3:a:wasm3_project:wasm3:0.5.0:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.09%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 37 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.3	MEDIUM	AV:N/AC:M/Au:N/C:N/I:N/A:P	8.6	2.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
5.5	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	1.8	3.6	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

Assigned by: nvd@nist.gov (Primary)

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33555

33555 - wasm3:fuzzer: Crash in CompileBlock - oss-fuzz
Exploit;Issue Tracking;Third Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/wasm3/OSV-2021-678.yaml

oss-fuzz-vulns/OSV-2021-678.yaml at main · google/oss-fuzz-vulns · GitHub
Third Party Advisory

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