{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2019-3556 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2019-3556 yet. Limit exposure of the affected software until one is available.","what":"CVE-2019-3556 is a high-severity path traversal vulnerability in Facebook HHVM, published on 26 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2019-3556 and fix it if it is affected.\n\nWhat it is: CVE-2019-3556 is a high-severity path traversal vulnerability in Facebook HHVM, published on 26 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2019-3556 in the wild and no public exploit code.\n\nAffected product: Facebook HHVM. 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-2019-3556/ (Markdown: https://insights.sbomify.com/CVE-2019-3556/index.md)","id":"CVE-2019-3556","markdown":"https://insights.sbomify.com/CVE-2019-3556/index.md","name":"CVE-2019-3556","record":{"aliases":["GHSA-36h6-q98c-7j6j","UBUNTU-CVE-2019-3556"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":true,"product_category":"HHVM admin server","requires_auth":"low_privilege","summary":"An attacker with access to the HHVM admin server can overwrite arbitrary files via an unvalidated path parameter in the dump-pcre-cache handler.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"facebook","cpe":[{"product":"hhvm","vendor":"facebook"}],"cvss":{"score":8.1,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"HHVM supports the use of an \"admin\" server which accepts administrative requests over HTTP. One of those request handlers, dump-pcre-cache, can be used to output cached regular expressions from the current execution context into a file. The handler takes a parameter which specifies where on the filesystem to write this data. The parameter is not validated, allowing a malicious user to overwrite arbitrary files where the user running HHVM has write access. This issue affects HHVM versions prior to 4.56.2, all versions between 4.57.0 and 4.78.0, as well as 4.79.0, 4.80.0, 4.81.0, 4.82.0, and 4.83.0.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Path traversal in HHVM","id":"CVE-2019-3556","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2019"},"n_packages":0,"n_references":3,"next":{"headline":"Memory corruption in HHVM","id":"CVE-2019-3557"},"packages":[],"prev":{"headline":"Wangle's AcceptRoutingHandler incorrectly casts a socket when accepting a TLS 1.3 connection, leading to a potential denial of service attac","id":"CVE-2019-3554"},"products":["HHVM"],"published":"2021-10-26","related":[{"cvss_score":9.8,"headline":"HHVM 4.172.0 and all prior versions use TLS 1.0 for secure connections when handling tls:// URLs in the stream extension.","id":"CVE-2022-36937","kev_date_added":null,"published":"2023-05-10"},{"cvss_score":9.8,"headline":"Use after free in HHVM","id":"CVE-2020-1900","kev_date_added":null,"published":"2021-03-11"},{"cvss_score":9.8,"headline":"Integer overflow in HHVM","id":"CVE-2020-1916","kev_date_added":null,"published":"2021-03-10"},{"cvss_score":9.8,"headline":"Memory corruption in HHVM","id":"CVE-2020-1917","kev_date_added":null,"published":"2021-03-10"},{"cvss_score":9.8,"headline":"Integer overflow in HHVM","id":"CVE-2021-24025","kev_date_added":null,"published":"2021-03-10"},{"cvss_score":9.8,"headline":"Other in n/a","id":"CVE-2016-1000004","kev_date_added":null,"published":"2020-02-19"},{"cvss_score":9.8,"headline":"Other in n/a","id":"CVE-2016-1000005","kev_date_added":null,"published":"2020-02-19"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["Facebook"]},"summary":"An attacker with access to the HHVM admin server can overwrite arbitrary files via an unvalidated path parameter in the dump-pcre-cache handler.","url":"https://insights.sbomify.com/CVE-2019-3556/"}