{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2020-3561 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-3561 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-3561 is a medium-severity vulnerability in Cisco Adaptive Security Appliance, published on 21 Oct 2020. 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-2020-3561 and fix it if it is affected.\n\nWhat it is: CVE-2020-3561 is a medium-severity vulnerability in Cisco Adaptive Security Appliance, published on 21 Oct 2020. 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-2020-3561 in the wild and no public exploit code.\n\nAffected product: Cisco Adaptive Security Appliance. 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-2020-3561/ (Markdown: https://insights.sbomify.com/CVE-2020-3561/index.md)","id":"CVE-2020-3561","markdown":"https://insights.sbomify.com/CVE-2020-3561/index.md","name":"CVE-2020-3561","record":{"aliases":["GHSA-pm23-qjx3-gg3f"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["security_bypass","other"],"network_reachable":"yes","non_default_config":false,"product_category":"Cisco ASA/FTD","requires_auth":"none","summary":"Unauthenticated attackers can inject HTTP headers via crafted links, enabling redirects and potential security bypasses in Cisco ASA and FTD WebVPN.","user_interaction":"required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"adaptive_security_appliance","vendor":"cisco"},{"product":"adaptive_security_appliance_software","vendor":"cisco"},{"product":"secure_firewall_threat_defense","vendor":"cisco"}],"cvss":{"score":4.7,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N","version":"3.0"},"cwes":[{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"},{"id":"CWE-93","name":"Improper Neutralization of CRLF Sequences"}],"description":"A vulnerability in the Clientless SSL VPN (WebVPN) of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to inject arbitrary HTTP headers in the responses of the affected system. The vulnerability is due to improper input sanitization. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to conduct a CRLF injection attack, adding arbitrary HTTP headers in the responses of the system and redirecting the user to arbitrary websites.","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":"Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software WebVPN CRLF Injection Vulnerability","id":"CVE-2020-3561","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"cisco:adaptive_security_appliance","products":["cisco:adaptive_security_appliance","cisco:adaptive_security_appliance_software","cisco:secure_firewall_threat_defense"],"type":"other","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Cisco Firepower 2100 Series SSL/TLS Inspection Denial of Service Vulnerability","id":"CVE-2020-3562"},"packages":[],"prev":{"headline":"Cisco Aironet Access Points UDP Flooding Denial of Service Vulnerability","id":"CVE-2020-3560"},"products":["Cisco Adaptive Security Appliance (ASA) Software"],"published":"2020-10-21","related":[{"cvss_score":8.6,"headline":"Denial of service in Cisco Adaptive Security Appliance Software","id":"CVE-2021-1573","kev_date_added":null,"published":"2022-01-11"},{"cvss_score":8.6,"headline":"Denial of service in Cisco Adaptive Security Appliance (ASA) Software","id":"CVE-2021-34793","kev_date_added":null,"published":"2021-10-27"},{"cvss_score":8.6,"headline":"Denial of service in Cisco Adaptive Security Appliance (ASA) Software","id":"CVE-2021-40117","kev_date_added":null,"published":"2021-10-27"},{"cvss_score":8.6,"headline":"Denial of service in Cisco Adaptive Security Appliance (ASA) Software","id":"CVE-2021-40118","kev_date_added":null,"published":"2021-10-27"},{"cvss_score":8.6,"headline":"Denial of service in Cisco Adaptive Security Appliance (ASA) Software","id":"CVE-2020-3304","kev_date_added":null,"published":"2020-10-21"},{"cvss_score":8.6,"headline":"File upload in Cisco Adaptive Security Appliance (ASA) Software","id":"CVE-2020-3436","kev_date_added":null,"published":"2020-10-21"},{"cvss_score":8.6,"headline":"Denial of service in Cisco Adaptive Security Appliance (ASA) Software","id":"CVE-2020-3528","kev_date_added":null,"published":"2020-10-21"}],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-11-13","vendors":["Cisco"]},"summary":"Unauthenticated attackers can inject HTTP headers via crafted links, enabling redirects and potential security bypasses in Cisco ASA and FTD WebVPN.","url":"https://insights.sbomify.com/CVE-2020-3561/"}