{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2018-15391 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2018-15391 yet. Limit exposure of the affected software until one is available.","what":"CVE-2018-15391 is a high-severity denial of service vulnerability in Cisco Remote PHY, published on 5 Oct 2018. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-15391 and fix it if it is affected.\n\nWhat it is: CVE-2018-15391 is a high-severity denial of service vulnerability in Cisco Remote PHY, published on 5 Oct 2018. 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-2018-15391 in the wild and no public exploit code.\n\nAffected product: Cisco Remote PHY. 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-2018-15391/ (Markdown: https://insights.sbomify.com/CVE-2018-15391/index.md)","id":"CVE-2018-15391","markdown":"https://insights.sbomify.com/CVE-2018-15391/index.md","name":"CVE-2018-15391","record":{"aliases":["GHSA-52rw-wpq3-w67j"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Cisco Remote PHY","requires_auth":"none","summary":"Unauthenticated remote attackers can cause denial of service by sending malformed IPv4 fragments to Cisco Remote PHY devices.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"remote","vendor":"cisco"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"},"cwes":[{"id":"CWE-682","name":"Incorrect Calculation"},{"id":"CWE-399","name":null}],"description":"A vulnerability in certain IPv4 fragment-processing functions of Cisco Remote PHY Software could allow an unauthenticated, remote attacker to impact traffic passing through a device, potentially causing a denial of service (DoS) condition. The vulnerability is due to the affected software not validating and calculating certain numerical values in IPv4 packets that are sent to an affected device. An attacker could exploit this vulnerability by sending malformed IPv4 traffic to an affected device. A successful exploit could allow the attacker to disrupt the flow of certain IPv4 traffic passing through an affected device, which could result in a DoS condition.","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 Remote PHY IPv4 Fragment Denial of Service Vulnerability","id":"CVE-2018-15391","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2018"},"n_packages":0,"n_references":1,"next":{"headline":"Cisco Industrial Network Director DHCP Request Processing Denial of Service Vulnerability","id":"CVE-2018-15392"},"packages":[],"prev":{"headline":"Cisco Firepower Threat Defense Software FTP Inspection Denial of Service Vulnerability","id":"CVE-2018-15390"},"products":["Cisco Remote PHY"],"published":"2018-10-05","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":"2024-11-26","vendors":["Cisco"]},"summary":"Unauthenticated remote attackers can cause denial of service by sending malformed IPv4 fragments to Cisco Remote PHY devices.","url":"https://insights.sbomify.com/CVE-2018-15391/"}