{"answers":{"affected":"It affects 5 products.","exploited":"There is no known exploitation of CVE-2021-34730 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-34730 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-34730 is a critical memory corruption vulnerability in Cisco Application Extension Platform, 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-2021-34730 and fix it if it is affected.\n\nWhat it is: CVE-2021-34730 is a critical memory corruption vulnerability in Cisco Application Extension Platform, 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-2021-34730 in the wild and no public exploit code.\n\nAffected product: Cisco Application Extension Platform. 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-2021-34730/ (Markdown: https://insights.sbomify.com/CVE-2021-34730/index.md)","id":"CVE-2021-34730","markdown":"https://insights.sbomify.com/CVE-2021-34730/index.md","name":"CVE-2021-34730","record":{"aliases":["GHSA-9c26-qcv5-q5qj"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Cisco Small Business Router","requires_auth":"none","summary":"Unauthenticated remote attackers can execute arbitrary code as root or cause denial of service on Cisco Small Business routers via crafted UPnP requests.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"application_extension_platform","vendor":"cisco"},{"product":"rv110w_wireless-n_vpn_firewall_firmware","vendor":"cisco"},{"product":"rv130_vpn_router_firmware","vendor":"cisco"},{"product":"rv130w_wireless-n_multifunction_vpn_router_firmware","vendor":"cisco"},{"product":"rv215w_wireless-n_vpn_router_firmware","vendor":"cisco"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-121","name":"Stack-based Buffer Overflow"}],"description":"A vulnerability in the Universal Plug-and-Play (UPnP) service of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an unauthenticated, remote attacker to execute arbitrary code or cause an affected device to restart unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to improper validation of incoming UPnP traffic. An attacker could exploit this vulnerability by sending a crafted UPnP request to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system or cause the device to reload, resulting in a DoS condition. Cisco has not released software updates that address this vulnerability.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2021-09-30","github_poc":1,"max_poc_stars":28,"metasploit":0,"nuclei":0,"refs":[{"date":"2021-09-30T11:21:04Z","kind":"github_poc","ref":"https://github.com/badmonkey7/CVE-2021-34730","stars":28,"title":"Cisco RV110w UPnP stack overflow "}],"tier":"poc_unverified"},"has_fix":null,"headline":"Memory corruption in Cisco Small Business RV Series Router Firmware","id":"CVE-2021-34730","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"cisco:application_extension_platform","products":["cisco:application_extension_platform","cisco:rv130_vpn_router_firmware","cisco:rv215w_wireless-n_vpn_router_firmware"],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Cisco Prime Access Registrar Stored Cross-Site Scripting Vulnerability","id":"CVE-2021-34731"},"packages":[],"prev":{"headline":"Cisco IOS XE SD-WAN Software Command Injection Vulnerability","id":"CVE-2021-34729"},"products":["Cisco Small Business RV Series Router Firmware"],"published":"2021-08-18","related":[{"cvss_score":7.2,"headline":"Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Command Injection Vulnerabilities","id":"CVE-2021-1146","kev_date_added":null,"published":"2021-01-13"},{"cvss_score":7.2,"headline":"Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Command Injection Vulnerabilities","id":"CVE-2021-1147","kev_date_added":null,"published":"2021-01-13"},{"cvss_score":7.2,"headline":"Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Command Injection Vulnerabilities","id":"CVE-2021-1148","kev_date_added":null,"published":"2021-01-13"},{"cvss_score":7.2,"headline":"Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Command Injection Vulnerabilities","id":"CVE-2021-1149","kev_date_added":null,"published":"2021-01-13"},{"cvss_score":7.2,"headline":"Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Command Injection Vulnerabilities","id":"CVE-2021-1150","kev_date_added":null,"published":"2021-01-13"},{"cvss_score":7.2,"headline":"Command injection in Cisco Small Business RV Series Router Firmware","id":"CVE-2021-1159","kev_date_added":null,"published":"2021-01-13"}],"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2024-11-07","vendors":["Cisco"]},"summary":"Unauthenticated remote attackers can execute arbitrary code as root or cause denial of service on Cisco Small Business routers via crafted UPnP requests.","url":"https://insights.sbomify.com/CVE-2021-34730/"}