{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-1353 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-1353 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-1353 is a medium-severity denial of service vulnerability in Cisco ASR 5000 Series Software, published on 20 Jan 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-2021-1353 and fix it if it is affected.\n\nWhat it is: CVE-2021-1353 is a medium-severity denial of service vulnerability in Cisco ASR 5000 Series Software, published on 20 Jan 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-2021-1353 in the wild and no public exploit code.\n\nAffected product: Cisco ASR 5000 Series Software. 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-2021-1353/ (Markdown: https://insights.sbomify.com/CVE-2021-1353/index.md)","id":"CVE-2021-1353","markdown":"https://insights.sbomify.com/CVE-2021-1353/index.md","name":"CVE-2021-1353","record":{"aliases":["GHSA-92xw-vwgc-8994"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Cisco ASR 5000","requires_auth":"none","summary":"Remote unauthenticated attackers can cause a denial of service on Cisco StarOS devices by sending crafted IPv4 packets that trigger a memory leak.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"staros","vendor":"cisco"},{"product":"virtualized_packet_core-single_instance","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:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-401","name":"Missing Release of Memory after Effective Lifetime"}],"description":"A vulnerability in the IPv4 protocol handling of Cisco StarOS could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a memory leak that occurs during packet processing. An attacker could exploit this vulnerability by sending a series of crafted IPv4 packets through an affected device. A successful exploit could allow the attacker to exhaust the available memory and cause an unexpected restart of the npusim process, leading to a DoS condition on the affected device.","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 StarOS IPv4 Denial of Service Vulnerability","id":"CVE-2021-1353","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Cisco Unified Computing System Central Software Improper Certificate Validation Vulnerability","id":"CVE-2021-1354"},"packages":[],"prev":{"headline":"Cisco IOS XE Software DECnet Phase IV/OSI Denial of Service Vulnerability","id":"CVE-2021-1352"},"products":["Cisco ASR 5000 Series Software"],"published":"2021-01-20","related":[{"cvss_score":8.8,"headline":"Auth bypass in Cisco ASR 5000 Series Software","id":"CVE-2023-20046","kev_date_added":null,"published":"2023-05-09"},{"cvss_score":8.6,"headline":"Cisco StarOS Denial of Service Vulnerability","id":"CVE-2019-1869","kev_date_added":null,"published":"2019-06-20"},{"cvss_score":8.6,"headline":"Denial of service in Cisco StarOS unknown","id":"CVE-2018-0369","kev_date_added":null,"published":"2018-07-16"},{"cvss_score":8.2,"headline":"Command injection in Cisco StarOS","id":"CVE-2017-6707","kev_date_added":null,"published":"2017-07-06"},{"cvss_score":8.1,"headline":"Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities","id":"CVE-2021-1539","kev_date_added":null,"published":"2021-06-04"},{"cvss_score":8.1,"headline":"Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities","id":"CVE-2021-1540","kev_date_added":null,"published":"2021-06-04"},{"cvss_score":7.5,"headline":"Denial of service in Cisco StarOS","id":"CVE-2018-0239","kev_date_added":null,"published":"2018-04-19"}],"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":"2024-11-12","vendors":["Cisco"]},"summary":"Remote unauthenticated attackers can cause a denial of service on Cisco StarOS devices by sending crafted IPv4 packets that trigger a memory leak.","url":"https://insights.sbomify.com/CVE-2021-1353/"}