{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2017-6721 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2017-6721 yet. Limit exposure of the affected software until one is available.","what":"CVE-2017-6721 is a medium-severity denial of service vulnerability in Cisco Wide Area Application Services, published on 4 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2017-6721 and fix it if it is affected.\n\nWhat it is: CVE-2017-6721 is a medium-severity denial of service vulnerability in Cisco Wide Area Application Services, published on 4 Jul 2017. 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-2017-6721 in the wild and no public exploit code.\n\nAffected product: Cisco Wide Area Application Services. 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-2017-6721/ (Markdown: https://insights.sbomify.com/CVE-2017-6721/index.md)","id":"CVE-2017-6721","markdown":"https://insights.sbomify.com/CVE-2017-6721/index.md","name":"CVE-2017-6721","record":{"aliases":["GHSA-w93q-4q5r-8jfj"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Cisco WAAS","requires_auth":"none","summary":"Remote unauthenticated attackers can cause a denial of service by sending fragmented TCP packets to Cisco WAAS devices.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"wide_area_application_services","vendor":"cisco"}],"cvss":{"score":5.3,"severity":"medium","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.0"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"A vulnerability in the ingress processing of fragmented TCP packets by Cisco Wide Area Application Services (WAAS) could allow an unauthenticated, remote attacker to cause the WAASNET process to restart unexpectedly, causing a denial of service (DoS) condition. More Information: CSCvc57428. Known Affected Releases: 6.3(1). Known Fixed Releases: 6.3(0.143) 6.2(3c)6 6.2(3.22).","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":"Denial of service in Cisco Wide Area Application Services","id":"CVE-2017-6721","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2017"},"n_packages":0,"n_references":3,"next":{"headline":"Auth bypass in Cisco Unified Contact Center Express","id":"CVE-2017-6722"},"packages":[],"prev":{"headline":"Denial of service in Cisco Small Business Managed Switches","id":"CVE-2017-6720"},"products":["Cisco Wide Area Application Services"],"published":"2017-07-04","related":[{"cvss_score":10,"headline":"Code injection in n/a","id":"CVE-2013-3443","kev_date_added":null,"published":"2013-07-31"},{"cvss_score":9.3,"headline":"Code injection in n/a","id":"CVE-2014-2196","kev_date_added":null,"published":"2014-05-23"},{"cvss_score":7.8,"headline":"Denial of service in n/a","id":"CVE-2007-3923","kev_date_added":null,"published":"2007-07-21"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2015-6421","kev_date_added":null,"published":"2016-01-27"},{"cvss_score":6.8,"headline":"Denial of service in Cisco Wide Area Application Services SMART-SSL Accelerator","id":"CVE-2017-6628","kev_date_added":null,"published":"2017-05-03"},{"cvss_score":6.7,"headline":"Privilege escalation in Cisco Wide Area Application Services unknown","id":"CVE-2018-0352","kev_date_added":null,"published":"2018-06-07"},{"cvss_score":6.5,"headline":"Denial of service in Cisco Wide Area Application Services","id":"CVE-2017-12256","kev_date_added":null,"published":"2017-10-05"}],"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":"2024-08-05","vendors":["n/a"]},"summary":"Remote unauthenticated attackers can cause a denial of service by sending fragmented TCP packets to Cisco WAAS devices.","url":"https://insights.sbomify.com/CVE-2017-6721/"}