{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-38495 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-38495 is a high-severity memory corruption vulnerability in Mozilla Firefox Esr, published on 3 Nov 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-2021-38495 and fix it if it is affected.\n\nWhat it is: CVE-2021-38495 is a high-severity memory corruption vulnerability in Mozilla Firefox Esr, published on 3 Nov 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-2021-38495 in the wild and no public exploit code.\n\nAffected product: Mozilla Firefox Esr. 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-2021-38495/ (Markdown: https://insights.sbomify.com/CVE-2021-38495/index.md)","id":"CVE-2021-38495","markdown":"https://insights.sbomify.com/CVE-2021-38495/index.md","name":"CVE-2021-38495","record":{"aliases":["GHSA-whqc-prwr-5mvr","UBUNTU-CVE-2021-38495"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Thunderbird email client","requires_auth":"none","summary":"Memory safety bugs in Thunderbird allow attackers to potentially execute arbitrary code via crafted content.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mozilla","cpe":[{"product":"firefox_esr","vendor":"mozilla"},{"product":"thunderbird","vendor":"mozilla"}],"cvss":{"score":8.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"Mozilla developers reported memory safety bugs present in Thunderbird 78.13.0. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird \u003c 91.1 and Firefox ESR \u003c 91.1.","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":"Memory corruption in Firefox ESR","id":"CVE-2021-38495","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"mozilla:firefox_esr","products":["mozilla:firefox_esr","mozilla:thunderbird"],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":5,"next":{"headline":"Use after free in Firefox","id":"CVE-2021-38496"},"packages":[],"prev":{"headline":"Memory corruption in Firefox","id":"CVE-2021-38494"},"products":["Firefox ESR","Thunderbird"],"published":"2021-11-03","related":[{"cvss_score":9.8,"headline":"Other in Firefox ESR","id":"CVE-2021-4127","kev_date_added":null,"published":"2022-12-22"},{"cvss_score":8.8,"headline":"Memory corruption in Firefox ESR","id":"CVE-2023-25746","kev_date_added":null,"published":"2023-06-02"},{"cvss_score":8.8,"headline":"Use after free in Firefox ESR","id":"CVE-2020-15669","kev_date_added":null,"published":"2020-10-01"},{"cvss_score":7.5,"headline":"Use after free in Firefox ESR","id":"CVE-2022-38476","kev_date_added":null,"published":"2022-12-22"},{"cvss_score":7.5,"headline":"Path traversal in Firefox ESR","id":"CVE-2020-6828","kev_date_added":null,"published":"2020-04-24"},{"cvss_score":6.5,"headline":"Memory corruption in Firefox ESR","id":"CVE-2023-1945","kev_date_added":null,"published":"2023-06-02"}],"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":["Mozilla"]},"summary":"Memory safety bugs in Thunderbird allow attackers to potentially execute arbitrary code via crafted content.","url":"https://insights.sbomify.com/CVE-2021-38495/"}