{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2021-34749 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-34749 is a medium-severity vulnerability in Cisco Secure Firewall Management Center, published on 18 Aug 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-2021-34749 and fix it if it is affected.\n\nWhat it is: CVE-2021-34749 is a medium-severity vulnerability in Cisco Secure Firewall Management Center, published on 18 Aug 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-2021-34749 in the wild and no public exploit code.\n\nAffected product: Cisco Secure Firewall Management Center. 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-2021-34749/ (Markdown: https://insights.sbomify.com/CVE-2021-34749/index.md)","id":"CVE-2021-34749","markdown":"https://insights.sbomify.com/CVE-2021-34749/index.md","name":"CVE-2021-34749","record":{"aliases":["GHSA-x64m-mg53-f49j","UBUNTU-CVE-2021-34749"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Cisco Web Security Appliance","requires_auth":"none","summary":"Unauthenticated attackers can bypass SSL filtering to exfiltrate data from compromised hosts via SNI requests in Cisco WSA, FTD, and Snort.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"firepower_management_center_virtual_appliance_firmware","vendor":"cisco"},{"product":"ironport_web_security_appliance","vendor":"cisco"},{"product":"secure_firewall_management_center","vendor":"cisco"}],"cvss":{"score":5.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"description":"A vulnerability in Server Name Identification (SNI) request filtering of Cisco Web Security Appliance (WSA), Cisco Firepower Threat Defense (FTD), and the Snort detection engine could allow an unauthenticated, remote attacker to bypass filtering technology on an affected device and exfiltrate data from a compromised host. This vulnerability is due to inadequate filtering of the SSL handshake. An attacker could exploit this vulnerability by using data from the SSL client hello packet to communicate with an external server. A successful exploit could allow the attacker to execute a command-and-control attack on a compromised host and perform additional data exfiltration attacks.","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":"Multiple Cisco Products Server Name Identification Data Exfiltration Vulnerability","id":"CVE-2021-34749","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"cisco:secure_firewall_management_center","products":["cisco:secure_firewall_management_center"],"type":"information_disclosure","year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"Cisco Firepower Management Center Software Configuration Information Disclosure Vulnerability","id":"CVE-2021-34750"},"packages":[],"prev":{"headline":"Cisco Intersight Virtual Appliance Command Injection Vulnerability","id":"CVE-2021-34748"},"products":["Cisco Web Security Appliance (WSA)"],"published":"2021-08-18","related":[],"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":"2024-11-07","vendors":["Cisco"]},"summary":"Unauthenticated attackers can bypass SSL filtering to exfiltrate data from compromised hosts via SNI requests in Cisco WSA, FTD, and Snort.","url":"https://insights.sbomify.com/CVE-2021-34749/"}