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GHSA-q9p8-33wc-h432
No affected components available
Impact
Hidde Smit from Cyber Eagle has discovered an User Enumeration flaw in Harbor. The issue is present in the "/users" api endpoint. This endpoint is supposed to be restricted to administrators. This restriction is able to be bypassed and information can be obtained via the "search" functionality.
Non-administrator users (such as those created via self-registration) can list all usernames and user IDs by sending a GET request to /api/users/search with parameter "username" and value "_", as follows:
curl -X GET "https://<host>/api/users/search?username=_" -H "accept: application/json" --user <user>:<password>
The vulnerability was immediately fixed by the Harbor team and all supported versions were patched. With the patched versions of Harbor, the username is required for search and we have removed the support for querying by email.
Patches
If your product uses the affected releases of Harbor, update to either version 2.1.0 or 2.0.3 to fix this issue immediately
https://github.com/goharbor/harbor/releases/tag/v2.1.0 https://github.com/goharbor/harbor/releases/tag/v2.0.3
Workarounds
There is no workaround for this issue
For more information
If you have any questions or comments about this advisory, contact cncf-harbor-security@lists.cncf.io View our security policy at https://github.com/goharbor/harbor/security/policy https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13794
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
- CVE-2020-13794Alias
- EUVD-2021-1165Alias
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