CVE-2026-82426— Apache Storm Nimbus 路径遍历漏洞

Apache Storm Nimbus: Arbitrary File Read on Nimbus via Unvalidated Uploaded Jar Location

Description Nimbus accepted the `uploadedJarLocation` argument of `submitTopology` / `submitTopologyWithOpts` as a server-side path and opened it directly, without checking that it referred to a file the caller had actually uploaded. The intended flow is that a client first calls `beginFileUpload`, which returns a path inside the Nimbus inbox, and uploads the jar in chunks to that location; nothing bound submission to that flow, and the `uploaders` map populated by `beginFileUpload` was never consulted at submit time. An authenticated user with topology submission rights could therefore submit any path readable by the Nimbus daemon user as their topology jar. Nimbus copied the file into the topology's jar blob, and the blob ACL grants the submitting subject read access, so the contents could then be retrieved with the ordinary blob download RPCs. Candidate targets include the Nimbus Kerberos keytab, Thrift and UI TLS private keys, and `storm.yaml` with the ZooKeeper authentication payload. Possession of the Nimbus keytab turns an ordinary tenant into a cluster administrator. In a deployment configured as the documentation recommends, submission is available to every authenticated principal when `nimbus.users` is unset, so no elevated privilege is required. Mitigation Upgrade to 3.1.0, where the submitted location is canonicalised and must resolve inside the Nimbus inbox. Users who cannot upgrade immediately should restrict topology submission to trusted principals via `nimbus.users` or `nimbus.groups`, and should treat any file readable by the Nimbus daemon user as potentially exposed to submitters: rotate the Nimbus keytab and any TLS private keys or ZooKeeper credentials reachable from that account. Local mode is unaffected. Credit Independently reported to the Apache Storm PMC by n0mi1k, with a proof of concept. Also found by the ASF using Claude agents to study the security of open-source projects, validated and reported by Apache Storm.

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对路径名的限制不恰当(路径遍历)

Apache Storm Nimbus 路径遍历漏洞

Apache Storm Nimbus是美国Apache基金会开源的一个负责分布式实时计算集群任务调度与状态监控的主控服务。 Apache Storm Nimbus 3.0.0版本至3.1.0之前版本存在路径遍历漏洞，该漏洞源于Nimbus未验证submitTopology/submitTopologyWithOpts的uploadedJarLocation参数是否指向调用者已上传的文件，直接将其作为服务端路径打开，具有拓扑提交权限的已认证用户可提交Nimbus守护进程可读取的任意路径作为拓扑jar，导致

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