{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-21372 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-21372 is a high-severity command injection vulnerability in nim-lang security, published on 26 Mar 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-21372 and fix it if it is affected.\n\nWhat it is: CVE-2021-21372 is a high-severity command injection vulnerability in nim-lang security, published on 26 Mar 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-21372 in the wild and no public exploit code.\n\nAffected product: nim-lang security. 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-2021-21372/ (Markdown: https://insights.sbomify.com/CVE-2021-21372/index.md)","id":"CVE-2021-21372","markdown":"https://insights.sbomify.com/CVE-2021-21372/index.md","name":"CVE-2021-21372","record":{"aliases":["DEBIAN-CVE-2021-21372","GHSA-rg9f-w24h-962p","UBUNTU-CVE-2021-21372"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Nim package manager","requires_auth":"none","summary":"Attackers can execute arbitrary commands by crafting malicious package metadata in Nimble, requiring users to upgrade the Nim toolchain.","user_interaction":"required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"nim","vendor":"nim-lang"}],"cvss":{"score":8.3,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command"},{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"},{"id":"CWE-20","name":"Improper Input Validation"}],"description":"Nimble is a package manager for the Nim programming language. In Nim release version before versions 1.2.10 and 1.4.4, Nimble doCmd is used in different places and can be leveraged to execute arbitrary commands. An attacker can craft a malicious entry in the packages.json package list to trigger code 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":"Nimble arbitrary code execution for specially crafted package metadata","id":"CVE-2021-21372","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"command_injection","year":"2021"},"n_packages":0,"n_references":4,"next":{"headline":"Nimble falls back to insecure http url when fetching packages","id":"CVE-2021-21373"},"packages":[],"prev":{"headline":"Execution of untrusted code through config file","id":"CVE-2021-21371"},"products":["security"],"published":"2021-03-26","related":[{"cvss_score":9.8,"headline":"Other in n/a","id":"CVE-2020-15690","kev_date_added":null,"published":"2021-01-30"},{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2020-15692","kev_date_added":null,"published":"2020-08-14"},{"cvss_score":8.1,"headline":"Nimble fails to validate certificates due to insecure httpClient defaults","id":"CVE-2021-21374","kev_date_added":null,"published":"2021-03-26"},{"cvss_score":7.5,"headline":"Nimble falls back to insecure http url when fetching packages","id":"CVE-2021-21373","kev_date_added":null,"published":"2021-03-26"},{"cvss_score":7.5,"headline":"Other in n/a","id":"CVE-2020-15694","kev_date_added":null,"published":"2020-08-14"},{"cvss_score":6.5,"headline":"Other in n/a","id":"CVE-2020-15693","kev_date_added":null,"published":"2020-08-14"}],"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":"2024-08-03","vendors":["nim-lang"]},"summary":"Attackers can execute arbitrary commands by crafting malicious package metadata in Nimble, requiring users to upgrade the Nim toolchain.","url":"https://insights.sbomify.com/CVE-2021-21372/"}