{"answers":{"affected":"3 open source packages ship an affected version, including actix-service. It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-35899 in the wild and no public exploit code.","fix":"Upgrade actix-service to 1.0.6 or later.","what":"CVE-2020-35899 is a medium-severity use after free vulnerability in n/a, published on 31 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-35899 and fix it if it is affected.\n\nWhat it is: CVE-2020-35899 is a medium-severity use after free vulnerability in n/a, published on 31 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-35899 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- actix-service (crates.io): affected all versions; fixed in 1.0.6\n- actix-service (crates.io): affected all versions; fixed in 1.0.6\n- actix-service (crates.io): affected from 0.0.0-0; fixed in 1.0.6\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-2020-35899/ (Markdown: https://insights.sbomify.com/CVE-2020-35899/index.md)","id":"CVE-2020-35899","markdown":"https://insights.sbomify.com/CVE-2020-35899/index.md","name":"CVE-2020-35899","record":{"aliases":["GHSA-whc7-5p35-4ww2","RUSTSEC-2020-0046"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Rust actix-service crate","requires_auth":"low_privilege","summary":"A flaw in the actix-service crate allows obtaining multiple mutable references, potentially leading to memory corruption and code execution.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"actix-service","vendor":"actix"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"An issue was discovered in the actix-service crate before 1.0.6 for Rust. The Cell implementation allows obtaining more than one mutable reference to the same data.","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":"Use after free in actix-service","id":"CVE-2020-35899","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"use_after_free","year":"2020"},"n_packages":3,"n_references":1,"next":{"headline":"use-after-free vulnerability in Rust array-queue","id":"CVE-2020-35900"},"packages":[{"ecosystem":"crates.io","fixed":["1.0.6"],"introduced":["0"],"last_affected":[],"package":"actix-service","purl":null,"source":"GHSA-whc7-5p35-4ww2"},{"ecosystem":"crates.io","fixed":["1.0.6"],"introduced":["0"],"last_affected":[],"package":"actix-service","purl":"pkg:cargo/actix-service","source":"GHSA-whc7-5p35-4ww2"},{"ecosystem":"crates.io","fixed":["1.0.6"],"introduced":["0.0.0-0"],"last_affected":[],"package":"actix-service","purl":"pkg:cargo/actix-service","source":"RUSTSEC-2020-0046"}],"prev":{"headline":"Use after free in actix-utils","id":"CVE-2020-35898"},"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":"A flaw in the actix-service crate allows obtaining multiple mutable references, potentially leading to memory corruption and code execution.","url":"https://insights.sbomify.com/CVE-2020-35899/"}