{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-40530 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-40530 is a medium-severity vulnerability in Fedoraproject Fedora, published on 6 Sep 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-2021-40530 and fix it if it is affected.\n\nWhat it is: CVE-2021-40530 is a medium-severity vulnerability in Fedoraproject Fedora, published on 6 Sep 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-2021-40530 in the wild and no public exploit code.\n\nAffected product: Fedoraproject Fedora. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2021-40530/ (Markdown: https://insights.sbomify.com/CVE-2021-40530/index.md)","id":"CVE-2021-40530","markdown":"https://insights.sbomify.com/CVE-2021-40530/index.md","name":"CVE-2021-40530","record":{"aliases":["DEBIAN-CVE-2021-40530","GHSA-p3r9-6fhw-hgv8","MGASA-2021-0468","UBUNTU-CVE-2021-40530"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Crypto++ library","requires_auth":"none","summary":"The ElGamal implementation in Crypto++ allows plaintext recovery via a cross-configuration attack against OpenPGP due to dangerous parameter combinations.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"crypto\\+\\+","vendor":"cryptopp"},{"product":"fedora","vendor":"fedoraproject"}],"cvss":{"score":5.9,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-327","name":"Use of a Broken or Risky Cryptographic Algorithm"}],"description":"The ElGamal implementation in Crypto++ through 8.5 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.","ecosystems":[],"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":"Weak cryptography in n/a","id":"CVE-2021-40530","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"fedoraproject:fedora","products":["fedoraproject:fedora"],"type":"weak_cryptography","year":"2021"},"n_packages":0,"n_references":6,"next":{"headline":"Security feature bypass in n/a","id":"CVE-2021-40531"},"packages":[],"prev":{"headline":"Weak cryptography in n/a","id":"CVE-2021-40529"},"products":["n/a"],"published":"2021-09-06","related":[{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2023-50980","kev_date_added":null,"published":"2023-12-18"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2023-50981","kev_date_added":null,"published":"2023-12-18"},{"cvss_score":7.5,"headline":"Information disclosure in n/a","id":"CVE-2022-48570","kev_date_added":null,"published":"2023-08-22"},{"cvss_score":7.5,"headline":"Information disclosure in n/a","id":"CVE-2016-3995","kev_date_added":null,"published":"2017-02-13"},{"cvss_score":7.5,"headline":"Use after free in n/a","id":"CVE-2016-7544","kev_date_added":null,"published":"2017-01-30"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2016-9939","kev_date_added":null,"published":"2017-01-30"},{"cvss_score":5.9,"headline":"Information disclosure in n/a","id":"CVE-2023-50979","kev_date_added":null,"published":"2023-12-18"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"The ElGamal implementation in Crypto++ allows plaintext recovery via a cross-configuration attack against OpenPGP due to dangerous parameter combinations.","url":"https://insights.sbomify.com/CVE-2021-40530/"}