{"id":"GHSA-4mq4-7rw3-vm5j","summary":"Wasmer filesystem sandbox not enforced","details":"### Summary\nAs of Wasmer version v4.2.3, Wasm programs can access the filesystem outside of the sandbox.\n\n### Details\nhttps://github.com/wasmerio/wasmer/issues/4267\n\n### PoC\nA minimal Rust program:\n\n```\nfn main() {\n    let f = std::fs::OpenOptions::new()\n        .write(true)\n        .create_new(true)\n        .open(\"abc\")\n        .unwrap();\n}\n```\n\nThis should be compiled with `cargo build --target wasm32-wasi`. The compiled program, when run with wasmer WITHOUT `--dir`, can still create a file in the working directory.\n\n### Impact\nService providers running untrusted Wasm code on Wasmer can unexpectedly expose the host filesystem.","aliases":["CVE-2023-51661"],"modified":"2024-01-03T16:44:36Z","published":"2023-12-13T13:32:38Z","related":["CVE-2023-51661"],"database_specific":{"severity":"HIGH","nvd_published_at":"2023-12-22T15:15:08Z","github_reviewed_at":"2023-12-13T13:32:38Z","cwe_ids":["CWE-284"],"github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/wasmerio/wasmer/security/advisories/GHSA-4mq4-7rw3-vm5j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-51661"},{"type":"WEB","url":"https://github.com/wasmerio/wasmer/issues/4267"},{"type":"WEB","url":"https://github.com/wasmerio/wasmer/commit/4d63febf9d8b257b0531963b85df48d45d0dbf3c"},{"type":"WEB","url":"https://github.com/wasmerio/wasmer/commit/e3923612c23123025c26f982d390e34df7df030f"},{"type":"PACKAGE","url":"https://github.com/wasmerio/wasmer"}],"affected":[{"package":{"name":"wasmer-cli","ecosystem":"crates.io","purl":"pkg:cargo/wasmer-cli"},"ranges":[{"type":"SEMVER","events":[{"introduced":"3.0.0"},{"fixed":"4.2.4"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/12/GHSA-4mq4-7rw3-vm5j/GHSA-4mq4-7rw3-vm5j.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}