CVE-2020-11576: Observable Discrepancy

December 9, 2021

Fixed in v1.5.1, Argo version v1.5.0 was vulnerable to a user-enumeration vulnerability which allowed attackers to determine the usernames of valid (non-SSO) accounts because /api/v1/session returned 401 for an existing username and 404 otherwise.

References

github.com/advisories/GHSA-vj54-cjrx-x696
github.com/argoproj/argo-cd/commit/35a7350b7444bcaf53ee0bb11b9d8e3ae4b717a1
github.com/argoproj/argo-cd/pull/3215
nvd.nist.gov/vuln/detail/CVE-2020-11576
www.soluble.ai/blog/argo-cves-2020

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