{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-21251 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-21251 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-21251 is a high-severity path traversal vulnerability in theonedev onedev, published on 15 Jan 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-21251 and fix it if it is affected.\n\nWhat it is: CVE-2021-21251 is a high-severity path traversal vulnerability in theonedev onedev, published on 15 Jan 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-2021-21251 in the wild and no public exploit code.\n\nAffected product: theonedev onedev. 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-2021-21251/ (Markdown: https://insights.sbomify.com/CVE-2021-21251/index.md)","id":"CVE-2021-21251","markdown":"https://insights.sbomify.com/CVE-2021-21251/index.md","name":"CVE-2021-21251","record":{"aliases":["GHSA-2w6j-wc8c-9mq2"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_modify","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"OneDev DevOps Platform","requires_auth":"low_privilege","summary":"Attackers with valid job tokens can exploit a zip slip vulnerability in OneDev to write arbitrary files, potentially leading to code execution.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"onedev","vendor":"onedev_project"}],"cvss":{"score":7.7,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"OneDev is an all-in-one devops platform. In OneDev before version 4.0.3 there is a critical \"zip slip\" vulnerability. This issue may lead to arbitrary file write. The KubernetesResource REST endpoint untars user controlled data from the request body using TarUtils. TarUtils is a custom library method leveraging Apache Commons Compress. During the untar process, there are no checks in place to prevent an untarred file from traversing the file system and overriding an existing file. For a successful exploitation, the attacker requires a valid __JobToken__ which may not be possible to get without using any of the other reported vulnerabilities. But this should be considered a vulnerability in `io.onedev.commons.utils.TarUtils` since it lives in a different artifact and can affect other projects using it. This issue was addressed in 4.0.3 by validating paths in tar archive to only allow them to be in specified folder when extracted.","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":"ZipSlip Arbitrary File Upload","id":"CVE-2021-21251","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":"Regular expression denial of service in jquery-validation","id":"CVE-2021-21252"},"packages":[],"prev":{"headline":"Post-Auth External Entity Expansion (XXE)","id":"CVE-2021-21250"},"products":["onedev"],"published":"2021-01-15","related":[{"cvss_score":10,"headline":"Pre-Auth Unsafe Deserialization on AttachmentUploadServet","id":"CVE-2021-21242","kev_date_added":null,"published":"2021-01-15"},{"cvss_score":10,"headline":"Pre-Auth Unsafe Deserialization on KubernetesResource","id":"CVE-2021-21243","kev_date_added":null,"published":"2021-01-15"},{"cvss_score":10,"headline":"Pre-Auth SSTI via Bean validation message tampering","id":"CVE-2021-21244","kev_date_added":null,"published":"2021-01-15"},{"cvss_score":10,"headline":"Pre-Auth Arbitrary File Upload","id":"CVE-2021-21245","kev_date_added":null,"published":"2021-01-15"},{"cvss_score":9.9,"headline":"CI/CD Docker Escape in OneDev","id":"CVE-2022-39206","kev_date_added":null,"published":"2022-09-13"},{"cvss_score":9.6,"headline":"Post-Auth Unsafe Deserialization on BasePage (AJAX)","id":"CVE-2021-21247","kev_date_added":null,"published":"2021-01-15"},{"cvss_score":9.6,"headline":"Post-Auth Arbitrary Code execution via Groovy script injection","id":"CVE-2021-21248","kev_date_added":null,"published":"2021-01-15"}],"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)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["theonedev"]},"summary":"Attackers with valid job tokens can exploit a zip slip vulnerability in OneDev to write arbitrary files, potentially leading to code execution.","url":"https://insights.sbomify.com/CVE-2021-21251/"}