{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2020-27863 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-27863 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-27863 is a medium-severity authentication bypass vulnerability in D-Link Multiple Routers, published on 11 Feb 2021. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-27863 and fix it if it is affected.\n\nWhat it is: CVE-2020-27863 is a medium-severity authentication bypass vulnerability in D-Link Multiple Routers, published on 11 Feb 2021. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-27863 in the wild and no public exploit code.\n\nAffected product: D-Link Multiple Routers. 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-2020-27863/ (Markdown: https://insights.sbomify.com/CVE-2020-27863/index.md)","id":"CVE-2020-27863","markdown":"https://insights.sbomify.com/CVE-2020-27863/index.md","name":"CVE-2020-27863","record":{"aliases":["GHSA-wpfj-wc8p-wv72"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["data_read","security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"D-Link router","requires_auth":"none","summary":"Network-adjacent attackers can bypass authentication on D-Link routers to disclose stored credentials via flawed string matching in the dhttpd service.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"zdi","cpe":[{"product":"dsl-2888a_firmware","vendor":"dlink"},{"product":"dva-2800_firmware","vendor":"dlink"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.0"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"},{"id":"CWE-288","name":"Authentication Bypass Using an Alternate Path or Channel"}],"description":"This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of D-Link DVA-2800 and DSL-2888A routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the dhttpd service, which listens on TCP port 8008 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise. Was ZDI-CAN-10912.","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":"Auth bypass in Multiple Routers","id":"CVE-2020-27863","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2020"},"n_packages":0,"n_references":2,"next":{"headline":"Command injection in DAP-1860","id":"CVE-2020-27864"},"packages":[],"prev":{"headline":"Command injection in Multiple Routers","id":"CVE-2020-27862"},"products":["Multiple Routers"],"published":"2021-02-11","related":[{"cvss_score":9.8,"headline":"Missing authorization in n/a","id":"CVE-2021-33346","kev_date_added":null,"published":"2021-06-24"},{"cvss_score":8.8,"headline":"Command injection in Multiple Routers","id":"CVE-2020-27862","kev_date_added":null,"published":"2021-02-11"},{"cvss_score":7.5,"headline":"Information disclosure in n/a","id":"CVE-2020-24577","kev_date_added":null,"published":"2021-01-08"}],"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":["D-Link"]},"summary":"Network-adjacent attackers can bypass authentication on D-Link routers to disclose stored credentials via flawed string matching in the dhttpd service.","url":"https://insights.sbomify.com/CVE-2020-27863/"}