{"answers":{"affected":"5 open source packages ship an affected version, including sha2. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-45696 in the wild and no public exploit code.","fix":"Upgrade sha2 to 0.9.8 or later.","what":"CVE-2021-45696 is a critical vulnerability in n/a, published on 26 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-45696 and fix it if it is affected.\n\nWhat it is: CVE-2021-45696 is a critical vulnerability in n/a, published on 26 Dec 2021. 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-2021-45696 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- sha2 (crates.io): affected from 0.9.7; fixed in 0.9.8\n- sha2 (crates.io): affected from 0.9.7; fixed in 0.9.8\n- sha2 (crates.io): affected from 0.9.7; fixed in 0.9.8\n- sha2 (crates.io): affected from 0.9.7; fixed in 0.9.8\n- sha2 (crates.io): affected from 0.9.7; fixed in 0.9.8\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-2021-45696/ (Markdown: https://insights.sbomify.com/CVE-2021-45696/index.md)","id":"CVE-2021-45696","markdown":"https://insights.sbomify.com/CVE-2021-45696/index.md","name":"CVE-2021-45696","record":{"aliases":["GHSA-fc7x-2cmc-8j2g","GHSA-xpww-g9jx-hp8r","RUSTSEC-2021-0100"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Rust SHA2 library","requires_auth":"none","summary":"Incorrect hash generation for long messages using AVX2 allows attackers to bypass integrity checks or corrupt data in applications relying on this Rust library.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"sha2","vendor":"sha2_project"}],"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 sha2 crate 0.9.7 before 0.9.8 for Rust. Hashes of long messages may be incorrect when the AVX2-accelerated backend is used.","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":"Incorrect hash in sha2","id":"CVE-2021-45696","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"weak_cryptography","year":"2021"},"n_packages":5,"n_references":2,"next":{"headline":"The `total_size` function for partial read the length of any `FixVec` is incorrect in molecule.","id":"CVE-2021-45697"},"packages":[{"ecosystem":"crates.io","fixed":["0.9.8"],"introduced":["0.9.7"],"last_affected":[],"package":"sha2","purl":null,"source":"GHSA-fc7x-2cmc-8j2g"},{"ecosystem":"crates.io","fixed":["0.9.8"],"introduced":["0.9.7"],"last_affected":[],"package":"sha2","purl":"pkg:cargo/sha2","source":"GHSA-fc7x-2cmc-8j2g"},{"ecosystem":"crates.io","fixed":["0.9.8"],"introduced":["0.9.7"],"last_affected":[],"package":"sha2","purl":null,"source":"GHSA-xpww-g9jx-hp8r"},{"ecosystem":"crates.io","fixed":["0.9.8"],"introduced":["0.9.7"],"last_affected":[],"package":"sha2","purl":"pkg:cargo/sha2","source":"GHSA-xpww-g9jx-hp8r"},{"ecosystem":"crates.io","fixed":["0.9.8"],"introduced":["0.9.7"],"last_affected":[],"package":"sha2","purl":"pkg:cargo/sha2","source":"RUSTSEC-2021-0100"}],"prev":{"headline":"Incorrect reliance on Trait memory layout in mopa","id":"CVE-2021-45695"},"products":["n/a"],"published":"2021-12-26","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":"Incorrect hash generation for long messages using AVX2 allows attackers to bypass integrity checks or corrupt data in applications relying on this Rust library.","url":"https://insights.sbomify.com/CVE-2021-45696/"}