{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2019-1921 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2019-1921 yet. Limit exposure of the affected software until one is available.","what":"CVE-2019-1921 is a medium-severity vulnerability in Cisco Email Security Appliance, published on 6 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2019-1921 and fix it if it is affected.\n\nWhat it is: CVE-2019-1921 is a medium-severity vulnerability in Cisco Email Security Appliance, published on 6 Jul 2019. 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-2019-1921 in the wild and no public exploit code.\n\nAffected product: Cisco Email 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-2019-1921/ (Markdown: https://insights.sbomify.com/CVE-2019-1921/index.md)","id":"CVE-2019-1921","markdown":"https://insights.sbomify.com/CVE-2019-1921/index.md","name":"CVE-2019-1921","record":{"aliases":["GHSA-q86h-wvjc-7wh4"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Email Security Appliance","requires_auth":"none","summary":"Remote attackers can bypass email content filters by naming malicious attachments with specific patterns, allowing blocked files to pass through.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"email_security_appliance","vendor":"cisco"}],"cvss":{"score":5.8,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","version":"3.0"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"A vulnerability in the attachment scanning of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass configured content filters on the device. The vulnerability is due to improper input validation of the email body. An attacker could exploit this vulnerability by naming a malicious attachment with a specific pattern. A successful exploit could allow the attacker to bypass configured content filters that would normally block the attachment.","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 Email Security Appliance Content Filter Bypass Vulnerability","id":"CVE-2019-1921","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"cisco:email_security_appliance","products":["cisco:email_security_appliance"],"type":"security_feature_bypass","year":"2019"},"n_packages":0,"n_references":1,"next":{"headline":"Cisco IP Phone 7800 and 8800 Series Session Initiation Protocol Denial of Service Vulnerability","id":"CVE-2019-1922"},"packages":[],"prev":{"headline":"Cisco IOS Access Points Software 802.11r Fast Transition Denial of Service Vulnerability","id":"CVE-2019-1920"},"products":["Cisco Email Security Appliance (ESA)"],"published":"2019-07-06","related":[{"cvss_score":9.8,"headline":"Cisco Email Security Appliance and Cisco Secure Email and Web Manager External Authentication Bypass Vulnerability","id":"CVE-2022-20798","kev_date_added":null,"published":"2022-06-15"},{"cvss_score":7.8,"headline":"Denial of service in n/a","id":"CVE-2015-6291","kev_date_added":null,"published":"2015-11-06"},{"cvss_score":7.7,"headline":"Cisco Email Security Appliance and Cisco Secure Email and Web Manager Information Disclosure Vulnerability","id":"CVE-2022-20664","kev_date_added":null,"published":"2022-06-15"},{"cvss_score":7.5,"headline":"Denial of service in Cisco Secure Email","id":"CVE-2022-20960","kev_date_added":null,"published":"2022-11-03"},{"cvss_score":7.5,"headline":"Security feature bypass in Email Security Appliance (ESA)","id":"CVE-2018-0419","kev_date_added":null,"published":"2018-08-15"},{"cvss_score":7.5,"headline":"Security feature bypass in Cisco AsyncOS through WSA10.0.0-000","id":"CVE-2016-1480","kev_date_added":null,"published":"2016-10-28"},{"cvss_score":7.5,"headline":"Denial of service in Cisco AsyncOS through 9.7.0-125","id":"CVE-2016-1481","kev_date_added":null,"published":"2016-10-28"}],"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-11-19","vendors":["Cisco"]},"summary":"Remote attackers can bypass email content filters by naming malicious attachments with specific patterns, allowing blocked files to pass through.","url":"https://insights.sbomify.com/CVE-2019-1921/"}