{"answers":{"affected":"3 open source packages ship an affected version, including dync. It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-35903 in the wild and no public exploit code.","fix":"Upgrade dync to 0.5.0 or later.","what":"CVE-2020-35903 is a medium-severity memory corruption 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-2020-35903 and fix it if it is affected.\n\nWhat it is: CVE-2020-35903 is a medium-severity memory corruption 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-2020-35903 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- dync (crates.io): affected all versions; fixed in 0.5.0\n- dync (crates.io): affected all versions; fixed in 0.5.0\n- dync (crates.io): affected from 0.0.0-0; fixed in 0.5.0\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-2020-35903/ (Markdown: https://insights.sbomify.com/CVE-2020-35903/index.md)","id":"CVE-2020-35903","markdown":"https://insights.sbomify.com/CVE-2020-35903/index.md","name":"CVE-2020-35903","record":{"aliases":["GHSA-qxjq-v4wf-ppvh","RUSTSEC-2020-0050"],"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 dync crate","requires_auth":"low_privilege","summary":"The dync crate allows misaligned memory access in VecCopy, potentially leading to crashes or arbitrary code execution in Rust applications.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"dync","vendor":"dync_project"}],"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":[],"description":"An issue was discovered in the dync crate before 0.5.0 for Rust. VecCopy allows misaligned element access because u8 is not always the type in question.","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 read in dync","id":"CVE-2020-35903","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"memory_corruption","year":"2020"},"n_packages":3,"n_references":1,"next":{"headline":"Other in n/a","id":"CVE-2020-35904"},"packages":[{"ecosystem":"crates.io","fixed":["0.5.0"],"introduced":["0"],"last_affected":[],"package":"dync","purl":null,"source":"GHSA-qxjq-v4wf-ppvh"},{"ecosystem":"crates.io","fixed":["0.5.0"],"introduced":["0"],"last_affected":[],"package":"dync","purl":"pkg:cargo/dync","source":"GHSA-qxjq-v4wf-ppvh"},{"ecosystem":"crates.io","fixed":["0.5.0"],"introduced":["0.0.0-0"],"last_affected":[],"package":"dync","purl":"pkg:cargo/dync","source":"RUSTSEC-2020-0050"}],"prev":{"headline":"Use-after-free in actix-codec","id":"CVE-2020-35902"},"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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"The dync crate allows misaligned memory access in VecCopy, potentially leading to crashes or arbitrary code execution in Rust applications.","url":"https://insights.sbomify.com/CVE-2020-35903/"}