{"answers":{"affected":"3 open source packages ship an affected version, including blake2. It affects 1 product.","exploited":"There is no known exploitation of CVE-2019-16143 in the wild and no public exploit code.","fix":"Upgrade blake2 to 0.8.1 or later.","what":"CVE-2019-16143 is a critical vulnerability in n/a, published on 9 Sep 2019. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2019-16143 and fix it if it is affected.\n\nWhat it is: CVE-2019-16143 is a critical vulnerability in n/a, published on 9 Sep 2019. 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-2019-16143 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- blake2 (crates.io): affected all versions; fixed in 0.8.1\n- blake2 (crates.io): affected all versions; fixed in 0.8.1\n- blake2 (crates.io): affected from 0.0.0-0; fixed in 0.8.1\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-2019-16143/ (Markdown: https://insights.sbomify.com/CVE-2019-16143/index.md)","id":"CVE-2019-16143","markdown":"https://insights.sbomify.com/CVE-2019-16143/index.md","name":"CVE-2019-16143","record":{"aliases":["GHSA-4x25-pvhw-5224","RUSTSEC-2019-0019"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["other"],"network_reachable":"yes","non_default_config":false,"product_category":"Rust BLAKE2 library","requires_auth":"none","summary":"The Rust blake2 crate produces incorrect HMAC results due to wrong block sizes, compromising cryptographic integrity for users of the library.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"blake2-rust","vendor":"blake2"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-327","name":"Use of a Broken or Risky Cryptographic Algorithm"}],"description":"An issue was discovered in the blake2 crate before 0.8.1 for Rust. The BLAKE2b and BLAKE2s algorithms, when used with HMAC, produce incorrect results because the block sizes are half of the required sizes.","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":"Algorithms compute incorrect results in blake2","id":"CVE-2019-16143","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"weak_cryptography","year":"2019"},"n_packages":3,"n_references":1,"next":{"headline":"Uninitialized memory use in generator","id":"CVE-2019-16144"},"packages":[{"ecosystem":"crates.io","fixed":["0.8.1"],"introduced":["0"],"last_affected":[],"package":"blake2","purl":null,"source":"GHSA-4x25-pvhw-5224"},{"ecosystem":"crates.io","fixed":["0.8.1"],"introduced":["0"],"last_affected":[],"package":"blake2","purl":"pkg:cargo/blake2","source":"GHSA-4x25-pvhw-5224"},{"ecosystem":"crates.io","fixed":["0.8.1"],"introduced":["0.0.0-0"],"last_affected":[],"package":"blake2","purl":"pkg:cargo/blake2","source":"RUSTSEC-2019-0019"}],"prev":{"headline":"Improper Input Validation in renderdoc","id":"CVE-2019-16142"},"products":["n/a"],"published":"2019-09-09","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":"2024-08-05","vendors":["n/a"]},"summary":"The Rust blake2 crate produces incorrect HMAC results due to wrong block sizes, compromising cryptographic integrity for users of the library.","url":"https://insights.sbomify.com/CVE-2019-16143/"}