{"answers":{"affected":"3 open source packages ship an affected version, including wolfcrypt. It affects 1 product.","exploited":"There is no known exploitation of CVE-2019-13628 in the wild and no public exploit code.","fix":"Upgrade wolfcrypt to 4.1.0 or later.","what":"CVE-2019-13628 is a medium-severity vulnerability in Wolfssl Wolfssl, published on 3 Oct 2019. 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-2019-13628 and fix it if it is affected.\n\nWhat it is: CVE-2019-13628 is a medium-severity vulnerability in Wolfssl Wolfssl, published on 3 Oct 2019. 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-2019-13628 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- wolfcrypt (PyPI): affected all versions; fixed in 4.1.0\n- wolfcrypt (PyPI): affected all versions; fixed in 4.1.0\n- wolfcrypt (PyPI): affected all versions; fixed in 4.1.0\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-2019-13628/ (Markdown: https://insights.sbomify.com/CVE-2019-13628/index.md)","id":"CVE-2019-13628","markdown":"https://insights.sbomify.com/CVE-2019-13628/index.md","name":"CVE-2019-13628","record":{"aliases":["DEBIAN-CVE-2019-13628","GHSA-q95h-vc86-hv77","PYSEC-2026-1066","UBUNTU-CVE-2019-13628"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"wolfSSL cryptographic library","requires_auth":"low_privilege","summary":"A timing side channel in wolfSSL ECDSA signature generation allows local attackers to recover private keys via lattice attacks when specific math options are disabled.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"wolfssl","vendor":"wolfssl"}],"cvss":{"score":4.7,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-203","name":"Observable Discrepancy"}],"description":"wolfSSL and wolfCrypt 4.0.0 and earlier (when configured without --enable-fpecc, --enable-sp, or --enable-sp-math) contain a timing side channel in ECDSA signature generation. This allows a local attacker, able to precisely measure the duration of signature operations, to infer information about the nonces used and potentially mount a lattice attack to recover the private key used. The issue occurs because ecc.c scalar multiplication might leak the bit length.","ecosystems":["PyPI"],"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":"wolfCrypt leaks cryptographic information via timing side channel","id":"CVE-2019-13628","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"wolfssl:wolfssl","products":["wolfssl:wolfssl"],"type":"information_disclosure","year":"2019"},"n_packages":3,"n_references":4,"next":{"headline":"Information disclosure in n/a","id":"CVE-2019-13629"},"packages":[{"ecosystem":"PyPI","fixed":["4.1.0"],"introduced":["0"],"last_affected":[],"package":"wolfcrypt","purl":null,"source":"GHSA-q95h-vc86-hv77"},{"ecosystem":"PyPI","fixed":["4.1.0"],"introduced":["0"],"last_affected":[],"package":"wolfcrypt","purl":"pkg:pypi/wolfcrypt","source":"GHSA-q95h-vc86-hv77"},{"ecosystem":"PyPI","fixed":["4.1.0"],"introduced":["0"],"last_affected":[],"package":"wolfcrypt","purl":"pkg:pypi/wolfcrypt","source":"PYSEC-2026-1066"}],"prev":{"headline":"Weak cryptography in n/a","id":"CVE-2019-13627"},"products":["n/a"],"published":"2019-10-03","related":[{"cvss_score":10,"headline":"Buffer overread in domain name matching","id":"CVE-2024-5991","kev_date_added":null,"published":"2024-08-27"},{"cvss_score":9.8,"headline":"Security feature bypass in n/a","id":"CVE-2021-37155","kev_date_added":null,"published":"2021-07-21"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2020-36177","kev_date_added":null,"published":"2021-01-06"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2014-2896","kev_date_added":null,"published":"2020-01-28"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2014-2897","kev_date_added":null,"published":"2020-01-28"},{"cvss_score":9.8,"headline":"Information disclosure in n/a","id":"CVE-2014-2898","kev_date_added":null,"published":"2020-01-28"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2019-16748","kev_date_added":null,"published":"2019-09-24"}],"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":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"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 timing side channel in wolfSSL ECDSA signature generation allows local attackers to recover private keys via lattice attacks when specific math options are disabled.","url":"https://insights.sbomify.com/CVE-2019-13628/"}