{"answers":{"affected":"It affects 4 products.","exploited":"There is no known exploitation of CVE-2021-20271 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-20271 is a high-severity code injection vulnerability in Fedoraproject Fedora, published on 26 Mar 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-20271 and fix it if it is affected.\n\nWhat it is: CVE-2021-20271 is a high-severity code injection vulnerability in Fedoraproject Fedora, published on 26 Mar 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-20271 in the wild and no public exploit code.\n\nAffected product: Fedoraproject Fedora. 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-2021-20271/ (Markdown: https://insights.sbomify.com/CVE-2021-20271/index.md)","id":"CVE-2021-20271","markdown":"https://insights.sbomify.com/CVE-2021-20271/index.md","name":"CVE-2021-20271","record":{"aliases":["DEBIAN-CVE-2021-20271","GHSA-77pm-gxx7-5c5f","OESA-2021-1163","RHSA-2021:4771","RHSA-2021:4785","RHSA-2021:4975","UBUNTU-CVE-2021-20271"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["code_execution","data_modify"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"RPM package manager","requires_auth":"none","summary":"Attackers can execute arbitrary code and corrupt the database by tricking users into installing a modified RPM package with a tampered signature header.","user_interaction":"required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"rpm","vendor":"rpm"},{"product":"starwind_virtual_san","vendor":"starwindsoftware"}],"cvss":{"score":7,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-345","name":"Insufficient Verification of Data Authenticity"}],"description":"A flaw was found in RPM's signature check functionality when reading a package file. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package, whose signature header was modified, to cause RPM database corruption and execute code. The highest threat from this vulnerability is to data integrity, confidentiality, and system availability.","ecosystems":["Red Hat:enterprise_linux:7::client","Red Hat:enterprise_linux:7::computenode","Red Hat:enterprise_linux:7::server","Red Hat:enterprise_linux:7::workstation","Red Hat:rhel_aus:7.6::server","Red Hat:rhel_aus:7.7::server","Red Hat:rhel_e4s:7.6::server","Red Hat:rhel_e4s:7.7::server","Red Hat:rhel_tus:7.6::server","Red Hat:rhel_tus:7.7::server"],"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":"Code injection in rpm","id":"CVE-2021-20271","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"fedoraproject:fedora","products":["fedoraproject:fedora","redhat:enterprise_linux"],"type":"code_injection","year":"2021"},"n_packages":105,"n_references":7,"next":{"headline":"Denial of service in privoxy","id":"CVE-2021-20272"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:4.11.3-48.el7_9"],"introduced":["0"],"last_affected":[],"package":"rpm","purl":"pkg:rpm/redhat/rpm","source":"RHSA-2021:4785"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:4.11.3-48.el7_9"],"introduced":["0"],"last_affected":[],"package":"rpm-apidocs","purl":"pkg:rpm/redhat/rpm-apidocs","source":"RHSA-2021:4785"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:4.11.3-48.el7_9"],"introduced":["0"],"last_affected":[],"package":"rpm-build","purl":"pkg:rpm/redhat/rpm-build","source":"RHSA-2021:4785"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:4.11.3-48.el7_9"],"introduced":["0"],"last_affected":[],"package":"rpm-build-libs","purl":"pkg:rpm/redhat/rpm-build-libs","source":"RHSA-2021:4785"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:4.11.3-48.el7_9"],"introduced":["0"],"last_affected":[],"package":"rpm-cron","purl":"pkg:rpm/redhat/rpm-cron","source":"RHSA-2021:4785"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:4.11.3-48.el7_9"],"introduced":["0"],"last_affected":[],"package":"rpm-debuginfo","purl":"pkg:rpm/redhat/rpm-debuginfo","source":"RHSA-2021:4785"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:4.11.3-48.el7_9"],"introduced":["0"],"last_affected":[],"package":"rpm-devel","purl":"pkg:rpm/redhat/rpm-devel","source":"RHSA-2021:4785"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:4.11.3-48.el7_9"],"introduced":["0"],"last_affected":[],"package":"rpm-libs","purl":"pkg:rpm/redhat/rpm-libs","source":"RHSA-2021:4785"},{"ecosystem":"Red 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Hat:enterprise_linux:7::workstation","fixed":["0:4.11.3-48.el7_9"],"introduced":["0"],"last_affected":[],"package":"rpm-plugin-systemd-inhibit","purl":"pkg:rpm/redhat/rpm-plugin-systemd-inhibit","source":"RHSA-2021:4785"},{"ecosystem":"Red Hat:enterprise_linux:7::workstation","fixed":["0:4.11.3-48.el7_9"],"introduced":["0"],"last_affected":[],"package":"rpm-python","purl":"pkg:rpm/redhat/rpm-python","source":"RHSA-2021:4785"},{"ecosystem":"Red Hat:enterprise_linux:7::workstation","fixed":["0:4.11.3-48.el7_9"],"introduced":["0"],"last_affected":[],"package":"rpm-sign","purl":"pkg:rpm/redhat/rpm-sign","source":"RHSA-2021:4785"},{"ecosystem":"Red Hat:rhel_aus:7.6::server","fixed":["0:4.11.3-35.el7_6.2"],"introduced":["0"],"last_affected":[],"package":"rpm","purl":"pkg:rpm/redhat/rpm","source":"RHSA-2021:4771"}],"prev":{"headline":"Infinite Loop in Pygments","id":"CVE-2021-20270"},"products":["rpm"],"published":"2021-03-26","related":[{"cvss_score":9.8,"headline":"PHP-CGI OS Command Injection","id":"CVE-2024-4577","kev_date_added":"2024-06-12","published":"2024-06-09"},{"cvss_score":9.8,"headline":"Grafana Authentication Bypass","id":"CVE-2021-39226","kev_date_added":"2022-08-25","published":"2021-10-05"},{"cvss_score":9.8,"headline":"VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow","id":"CVE-2019-5544","kev_date_added":"2021-11-03","published":"2019-12-06"},{"cvss_score":9.6,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2024-4947","kev_date_added":"2024-05-20","published":"2024-05-15"},{"cvss_score":9.6,"headline":"Google Chromium Visuals Use-After-Free","id":"CVE-2024-4671","kev_date_added":"2024-05-13","published":"2024-05-09"},{"cvss_score":9.6,"headline":"Google Chromium Mojo Insufficient Data Validation","id":"CVE-2022-3075","kev_date_added":"2022-09-08","published":"2022-09-26"},{"cvss_score":9.6,"headline":"Google Chromium Indexed DB API Use-After-Free","id":"CVE-2021-30633","kev_date_added":"2021-11-03","published":"2021-10-08"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":["n/a"]},"summary":"Attackers can execute arbitrary code and corrupt the database by tricking users into installing a modified RPM package with a tampered signature header.","url":"https://insights.sbomify.com/CVE-2021-20271/"}