{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2017-15271 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2017-15271 yet. Limit exposure of the affected software until one is available.","what":"CVE-2017-15271 is a medium-severity use after free vulnerability in n/a, published on 15 Nov 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-2017-15271 and fix it if it is affected.\n\nWhat it is: CVE-2017-15271 is a medium-severity use after free vulnerability in n/a, published on 15 Nov 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-2017-15271 in the wild and no public exploit code.\n\nAffected product: n/a. 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-2017-15271/ (Markdown: https://insights.sbomify.com/CVE-2017-15271/index.md)","id":"CVE-2017-15271","markdown":"https://insights.sbomify.com/CVE-2017-15271/index.md","name":"CVE-2017-15271","record":{"aliases":["GHSA-fcg6-9hqq-q764"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"SFTP server","requires_auth":"none","summary":"Remote attackers can cause a denial of service in PSFTPd by triggering a use-after-free via crafted SSH strings before authentication.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"psftpd","vendor":"psftp"}],"cvss":{"score":5.9,"severity":"medium","source":"nvd","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"A use-after-free issue could be triggered remotely in the SFTP component of PSFTPd 10.0.4 Build 729. This issue could be triggered prior to authentication. The PSFTPd server did not automatically restart, which enabled attackers to perform a very effective DoS attack against this service. By sending a crafted SSH identification / version string to the server, a NULL pointer dereference could be caused, apparently because of a race condition in the window message handling, performing the cleanup for invalid connections. This incorrect cleanup code has a use-after-free.","ecosystems":[],"exploits":{"exploitdb":1,"first_seen":"2017-11-14","github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[{"date":"2017-11-14","kind":"exploitdb","ref":"43144","stars":null,"title":"PSFTPd Windows FTP Server 10.0.4 Build 729 - Log Injection / Use-After-Free"}],"tier":"poc_unverified"},"has_fix":null,"headline":"Use after free in n/a","id":"CVE-2017-15271","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2017"},"n_packages":0,"n_references":4,"next":{"headline":"Hardcoded credentials in n/a","id":"CVE-2017-15272"},"packages":[],"prev":{"headline":"Other in n/a","id":"CVE-2017-15270"},"products":["n/a"],"published":"2017-11-15","related":[{"cvss_score":5.3,"headline":"Other in n/a","id":"CVE-2017-15270","kev_date_added":null,"published":"2017-11-15"},{"cvss_score":5.3,"headline":"Hardcoded credentials in n/a","id":"CVE-2017-15272","kev_date_added":null,"published":"2017-11-15"},{"cvss_score":4.3,"headline":"Server-side request forgery in n/a","id":"CVE-2017-15269","kev_date_added":null,"published":"2017-11-15"}],"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":"attribution","licence":"GPL-2.0-or-later","name":"Exploit-DB"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["n/a"]},"summary":"Remote attackers can cause a denial of service in PSFTPd by triggering a use-after-free via crafted SSH strings before authentication.","url":"https://insights.sbomify.com/CVE-2017-15271/"}