{"answers":{"affected":"3 open source packages ship an affected version, including lettre. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-38189 in the wild and no public exploit code.","fix":"Upgrade lettre to a fixed version for your release line: 0.9.6 or 0.10.0-rc.3.","what":"CVE-2021-38189 is a critical command injection vulnerability in n/a, published on 8 Aug 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-2021-38189 and fix it if it is affected.\n\nWhat it is: CVE-2021-38189 is a critical command injection vulnerability in n/a, published on 8 Aug 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-2021-38189 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- lettre (crates.io): affected from 0.7.0; fixed in 0.9.6, 0.10.0-rc.3\n- lettre (crates.io): affected from 0.7.0; fixed in 0.9.6\n- lettre (crates.io): affected from 0.7.0; fixed in 0.9.6\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-2021-38189/ (Markdown: https://insights.sbomify.com/CVE-2021-38189/index.md)","id":"CVE-2021-38189","markdown":"https://insights.sbomify.com/CVE-2021-38189/index.md","name":"CVE-2021-38189","record":{"aliases":["GHSA-qc36-q22q-cjw3","RUSTSEC-2021-0069"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Rust email library","requires_auth":"none","summary":"Attackers can inject arbitrary SMTP commands via crafted email bodies in the lettre crate, potentially leading to code execution or data modification.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"lettre","vendor":"lettre"}],"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-77","name":"Improper Neutralization of Special Elements used in a Command"}],"description":"An issue was discovered in the lettre crate before 0.9.6 for Rust. In an e-mail message body, an attacker can place a . character after two \u003cCR\u003e\u003cLF\u003e sequences and then inject arbitrary SMTP commands.","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":"SMTP command injection in lettre","id":"CVE-2021-38189","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"command_injection","year":"2021"},"n_packages":3,"n_references":2,"next":{"headline":"Out of bounds write in nalgebra","id":"CVE-2021-38190"},"packages":[{"ecosystem":"crates.io","fixed":["0.9.6","0.10.0-rc.3"],"introduced":["0.7.0","0.10.0-alpha.1"],"last_affected":[],"package":"lettre","purl":"pkg:cargo/lettre","source":"RUSTSEC-2021-0069"},{"ecosystem":"crates.io","fixed":["0.9.6"],"introduced":["0.7.0"],"last_affected":[],"package":"lettre","purl":null,"source":"GHSA-qc36-q22q-cjw3"},{"ecosystem":"crates.io","fixed":["0.9.6"],"introduced":["0.7.0"],"last_affected":[],"package":"lettre","purl":"pkg:cargo/lettre","source":"GHSA-qc36-q22q-cjw3"}],"prev":{"headline":"Incorrect buffer size calculation in iced-x86","id":"CVE-2021-38188"},"products":["n/a"],"published":"2021-08-08","related":[{"cvss_score":5.3,"headline":"Argument injection in lettre","id":"CVE-2020-28247","kev_date_added":null,"published":"2020-11-12"}],"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":"Attackers can inject arbitrary SMTP commands via crafted email bodies in the lettre crate, potentially leading to code execution or data modification.","url":"https://insights.sbomify.com/CVE-2021-38189/"}