{"answers":{"affected":"5 open source packages ship an affected version, including lucet-runtime-internals. It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-35859 in the wild and no public exploit code.","fix":"Upgrade lucet-runtime-internals to a fixed version for your release line: 0.4.3 or 0.5.1.","what":"CVE-2020-35859 is a critical memory corruption vulnerability in n/a, published on 31 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-35859 and fix it if it is affected.\n\nWhat it is: CVE-2020-35859 is a critical memory corruption vulnerability in n/a, published on 31 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-35859 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- lucet-runtime-internals (crates.io): affected all versions; fixed in 0.4.3\n- lucet-runtime-internals (crates.io): affected all versions; fixed in 0.4.3\n- lucet-runtime-internals (crates.io): affected from 0.0.0-0; fixed in 0.4.3, 0.5.1\n- lucet-runtime-internals (crates.io): affected from 0.5.0; fixed in 0.5.1\n- lucet-runtime-internals (crates.io): affected from 0.5.0; fixed in 0.5.1\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2020-35859/ (Markdown: https://insights.sbomify.com/CVE-2020-35859/index.md)","id":"CVE-2020-35859","markdown":"https://insights.sbomify.com/CVE-2020-35859/index.md","name":"CVE-2020-35859","record":{"aliases":["GHSA-3933-wvjf-pcvc","RUSTSEC-2020-0004"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Rust runtime library","requires_auth":"none","summary":"Guest programs can exploit mishandled sigstack allocation to read sensitive information or cause memory corruption in the lucet-runtime-internals crate.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"lucet-runtime-internals","vendor":"lucet-runtime-internals_project"}],"cvss":{"score":9.1,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"An issue was discovered in the lucet-runtime-internals crate before 0.5.1 for Rust. It mishandles sigstack allocation. Guest programs may be able to obtain sensitive information, or guest programs can experience memory corruption.","ecosystems":["crates.io"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Out of bounds access in lucet-runtime-internals","id":"CVE-2020-35859","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"memory_corruption","year":"2020"},"n_packages":5,"n_references":1,"next":{"headline":"NULL Pointer Dereference in cbox","id":"CVE-2020-35860"},"packages":[{"ecosystem":"crates.io","fixed":["0.4.3"],"introduced":["0"],"last_affected":[],"package":"lucet-runtime-internals","purl":null,"source":"GHSA-3933-wvjf-pcvc"},{"ecosystem":"crates.io","fixed":["0.4.3"],"introduced":["0"],"last_affected":[],"package":"lucet-runtime-internals","purl":"pkg:cargo/lucet-runtime-internals","source":"GHSA-3933-wvjf-pcvc"},{"ecosystem":"crates.io","fixed":["0.4.3","0.5.1"],"introduced":["0.0.0-0","0.5.0"],"last_affected":[],"package":"lucet-runtime-internals","purl":"pkg:cargo/lucet-runtime-internals","source":"RUSTSEC-2020-0004"},{"ecosystem":"crates.io","fixed":["0.5.1"],"introduced":["0.5.0"],"last_affected":[],"package":"lucet-runtime-internals","purl":null,"source":"GHSA-3933-wvjf-pcvc"},{"ecosystem":"crates.io","fixed":["0.5.1"],"introduced":["0.5.0"],"last_affected":[],"package":"lucet-runtime-internals","purl":"pkg:cargo/lucet-runtime-internals","source":"GHSA-3933-wvjf-pcvc"}],"prev":{"headline":"Out of bounds write in prost","id":"CVE-2020-35858"},"products":["n/a"],"published":"2020-12-31","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"open","licence":"CC0 1.0","name":"RustSec","prefix":"RUSTSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"Guest programs can exploit mishandled sigstack allocation to read sensitive information or cause memory corruption in the lucet-runtime-internals crate.","url":"https://insights.sbomify.com/CVE-2020-35859/"}