{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-27419 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-27419 is a high-severity vulnerability in uClibc-ng, published on 3 May 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-27419 and fix it if it is affected.\n\nWhat it is: CVE-2021-27419 is a high-severity vulnerability in uClibc-ng, published on 3 May 2022. 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-2021-27419 in the wild and no public exploit code.\n\nAffected product: uClibc-ng. 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-2021-27419/ (Markdown: https://insights.sbomify.com/CVE-2021-27419/index.md)","id":"CVE-2021-27419","markdown":"https://insights.sbomify.com/CVE-2021-27419/index.md","name":"CVE-2021-27419","record":{"aliases":["DEBIAN-CVE-2021-27419","GHSA-499x-cvfw-94w6"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"uClibc-ng C library","requires_auth":"none","summary":"An integer overflow in uClibc-ng's malloc-simple function allows attackers to cause crashes or execute arbitrary code via improper memory allocation.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"icscert","cpe":[{"product":"uclibc-ng","vendor":"uclibc-ng_project"}],"cvss":{"score":7.3,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"description":"uClibc-ng versions prior to 1.0.37 are vulnerable to integer wrap-around in functions malloc-simple. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.","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":"uClibc-ng Integer Overflow or Wraparound","id":"CVE-2021-27419","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"GE UR family input validation","id":"CVE-2021-27420"},"packages":[],"prev":{"headline":"GE UR family input validation","id":"CVE-2021-27418"},"products":["uClibc-ng"],"published":"2022-05-03","related":[{"cvss_score":9.6,"headline":"Cross-site scripting in n/a","id":"CVE-2021-43523","kev_date_added":null,"published":"2021-11-10"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2016-2224","kev_date_added":null,"published":"2017-03-24"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2016-2225","kev_date_added":null,"published":"2017-03-24"},{"cvss_score":7.5,"headline":"Integer overflow in n/a","id":"CVE-2016-6264","kev_date_added":null,"published":"2017-01-27"},{"cvss_score":6.5,"headline":"Other in n/a","id":"CVE-2022-30295","kev_date_added":null,"published":"2022-05-06"}],"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-04-16","vendors":["uClibc-ng"]},"summary":"An integer overflow in uClibc-ng's malloc-simple function allows attackers to cause crashes or execute arbitrary code via improper memory allocation.","url":"https://insights.sbomify.com/CVE-2021-27419/"}