{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-42857 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-42857 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-42857 is a medium-severity path traversal vulnerability in Aternity SteelCentral AppInternals Dynamic Sampling Agent, published on 9 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-42857 and fix it if it is affected.\n\nWhat it is: CVE-2021-42857 is a medium-severity path traversal vulnerability in Aternity SteelCentral AppInternals Dynamic Sampling Agent, published on 9 Mar 2022. 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-2021-42857 in the wild and no public exploit code.\n\nAffected product: Aternity SteelCentral AppInternals Dynamic Sampling Agent. 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-2021-42857/ (Markdown: https://insights.sbomify.com/CVE-2021-42857/index.md)","id":"CVE-2021-42857","markdown":"https://insights.sbomify.com/CVE-2021-42857/index.md","name":"CVE-2021-42857","record":{"aliases":["GHSA-wcq9-68x2-x82m"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"AppInternals Dynamic Sampling Agent","requires_auth":"none","summary":"Attackers can exploit directory traversal in the AgentDaServlet API to write files to arbitrary locations on the server.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GovTech CSG","cpe":[{"product":"steelcentral_appinternals_dynamic_sampling_agent","vendor":"riverbed"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"},{"id":"CWE-20","name":"Improper Input Validation"}],"description":"It was discovered that the SteelCentral AppInternals Dynamic Sampling Agent's (DSA) AgentDaServlet has directory traversal vulnerabilities at the \"/api/appInternals/1.0/agent/da/pcf\" API. The affected endpoint does not have any validation of the user's input that allows a malicious payload to be injected.","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":"Directory Traversal Partial Write at AgentDaServlet","id":"CVE-2021-42857","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in n/a","id":"CVE-2021-42859"},"packages":[],"prev":{"headline":"Reflected Cross-site Scripting at DsaDataTest","id":"CVE-2021-42856"},"products":["SteelCentral AppInternals Dynamic Sampling Agent"],"published":"2022-03-09","related":[{"cvss_score":9.8,"headline":"Remote Code Execution at AgentControllerServlet","id":"CVE-2021-42786","kev_date_added":null,"published":"2022-03-09"},{"cvss_score":9.8,"headline":"Directory Traversal Read/Write/Delete at PluginServlet","id":"CVE-2021-42854","kev_date_added":null,"published":"2022-03-09"},{"cvss_score":9.4,"headline":"Directory Traversal Write/Delete/Partial Read at AgentConfigurationServlet","id":"CVE-2021-42787","kev_date_added":null,"published":"2022-03-09"},{"cvss_score":9.1,"headline":"Directory Traversal Delete/Read at AgentDiagnosticServlet","id":"CVE-2021-42853","kev_date_added":null,"published":"2022-03-09"},{"cvss_score":7.8,"headline":"Local privilege escalation due to misconfigured write permission on .debug_command.config file","id":"CVE-2021-42855","kev_date_added":null,"published":"2022-03-09"},{"cvss_score":4.7,"headline":"Reflected Cross-site Scripting at DsaDataTest","id":"CVE-2021-42856","kev_date_added":null,"published":"2022-03-09"}],"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":"2024-09-16","vendors":["Aternity"]},"summary":"Attackers can exploit directory traversal in the AgentDaServlet API to write files to arbitrary locations on the server.","url":"https://insights.sbomify.com/CVE-2021-42857/"}