{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-21743 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-21743 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-21743 is a medium-severity vulnerability in MF971R, published on 20 Oct 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-2021-21743 and fix it if it is affected.\n\nWhat it is: CVE-2021-21743 is a medium-severity vulnerability in MF971R, published on 20 Oct 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-2021-21743 in the wild and no public exploit code.\n\nAffected product: MF971R. 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-2021-21743/ (Markdown: https://insights.sbomify.com/CVE-2021-21743/index.md)","id":"CVE-2021-21743","markdown":"https://insights.sbomify.com/CVE-2021-21743/index.md","name":"CVE-2021-21743","record":{"aliases":["GHSA-jm9f-ff4v-792m"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"ZTE mobile hotspot","requires_auth":"none","summary":"Attackers can modify HTTP response headers via CRLF injection in ZTE MF971R devices, potentially affecting user sessions or content integrity.","user_interaction":"required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"zte","cpe":[{"product":"mf971r_firmware","vendor":"zte"}],"cvss":{"score":4.3,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"description":"ZTE MF971R product has a CRLF injection vulnerability. An attacker could exploit the vulnerability to modify the HTTP response header information through a specially crafted HTTP request.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Other in MF971R","id":"CVE-2021-21743","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Misconfiguration in MF971R","id":"CVE-2021-21744"},"packages":[],"prev":{"headline":"Information disclosure in ZTE Axon 30 Pro Message Service App","id":"CVE-2021-21742"},"products":["MF971R"],"published":"2021-10-20","related":[{"cvss_score":9.8,"headline":"Memory corruption in MF971R","id":"CVE-2021-21748","kev_date_added":null,"published":"2021-10-20"},{"cvss_score":9.8,"headline":"Memory corruption in MF971R","id":"CVE-2021-21749","kev_date_added":null,"published":"2021-10-20"},{"cvss_score":7.5,"headline":"Misconfiguration in MF971R","id":"CVE-2021-21744","kev_date_added":null,"published":"2021-10-20"},{"cvss_score":6.1,"headline":"Cross-site scripting in MF971R","id":"CVE-2021-21746","kev_date_added":null,"published":"2021-10-20"},{"cvss_score":6.1,"headline":"Cross-site scripting in MF971R","id":"CVE-2021-21747","kev_date_added":null,"published":"2021-10-20"},{"cvss_score":4.3,"headline":"Cross-site request forgery in MF971R","id":"CVE-2021-21745","kev_date_added":null,"published":"2021-10-20"}],"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":["n/a"]},"summary":"Attackers can modify HTTP response headers via CRLF injection in ZTE MF971R devices, potentially affecting user sessions or content integrity.","url":"https://insights.sbomify.com/CVE-2021-21743/"}