{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-14387 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2020-14387 is a high-severity vulnerability in rsync, published on 27 May 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-2020-14387 and fix it if it is affected.\n\nWhat it is: CVE-2020-14387 is a high-severity vulnerability in rsync, published on 27 May 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-2020-14387 in the wild and no public exploit code.\n\nAffected product: rsync. 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-2020-14387/ (Markdown: https://insights.sbomify.com/CVE-2020-14387/index.md)","id":"CVE-2020-14387","markdown":"https://insights.sbomify.com/CVE-2020-14387/index.md","name":"CVE-2020-14387","record":{"aliases":["ALPINE-CVE-2020-14387","AZL-7462","DEBIAN-CVE-2020-14387","GHSA-5gm2-c485-9q6q"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":true,"product_category":"rsync file transfer","requires_auth":"none","summary":"Attackers can bypass TLS host validation in rsync-ssl via man-in-the-middle attacks, compromising data confidentiality and integrity.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"rsync","vendor":"samba"}],"cvss":{"score":7.4,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-297","name":"Improper Validation of Certificate with Host Mismatch"}],"description":"A flaw was found in rsync in versions since 3.2.0pre1. Rsync improperly validates certificate with host mismatch vulnerability. A remote, unauthenticated attacker could exploit the flaw by performing a man-in-the-middle attack using a valid certificate for another hostname which could compromise confidentiality and integrity of data transmitted using rsync-ssl. The highest threat from this vulnerability is to data confidentiality and integrity. This flaw affects rsync versions before 3.2.4.","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":"Security feature bypass in rsync","id":"CVE-2020-14387","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Missing authorization in Red Hat 3scale API Management","id":"CVE-2020-14388"},"packages":[],"prev":{"headline":"Memory corruption in kernel","id":"CVE-2020-14386"},"products":["rsync"],"published":"2021-05-27","related":[{"cvss_score":9.8,"headline":"Security feature bypass in n/a","id":"CVE-2017-15994","kev_date_added":null,"published":"2017-10-29"},{"cvss_score":9.1,"headline":"rsync \u003c 3.5.0 Daemon IP Spoofing via PROXY Protocol Header","id":"CVE-2026-53791","kev_date_added":null,"published":"2026-08-13"},{"cvss_score":8.8,"headline":"rsync 3.2.5 \u003c 3.5.0 Heap Out-of-Bounds Write via files-from Entry","id":"CVE-2026-70461","kev_date_added":null,"published":"2026-08-13"},{"cvss_score":8.7,"headline":"rsync 3.4.2 \u003c 3.5.0 DoS via --zt Zstandard Compression Thread Exhaustion","id":"CVE-2026-70455","kev_date_added":null,"published":"2026-08-13"},{"cvss_score":8.6,"headline":"rsync 3.1.0 \u003c 3.5.0 Authorization Bypass via auth users Directive Parsing","id":"CVE-2026-70463","kev_date_added":null,"published":"2026-08-13"},{"cvss_score":8.5,"headline":"rsync \u003c 3.5.0 Symlink Following Arbitrary File Overwrite","id":"CVE-2026-53803","kev_date_added":null,"published":"2026-08-13"},{"cvss_score":8.4,"headline":"rsync \u003c 3.5.0 Path Traversal via Symlink Module Root","id":"CVE-2026-53784","kev_date_added":null,"published":"2026-08-13"}],"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":["n/a"]},"summary":"Attackers can bypass TLS host validation in rsync-ssl via man-in-the-middle attacks, compromising data confidentiality and integrity.","url":"https://insights.sbomify.com/CVE-2020-14387/"}