Vulnerability Description
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Prior to versions 2.8.13, 2.9.9, and 2.10.4, an attacker can effectively bypass the rate limit and brute force protections by exploiting the application's weak cache-based mechanism. This loophole in security can be combined with other vulnerabilities to attack the default admin account. This flaw undermines a patch for CVE-2020-8827 intended to protect against brute-force attacks. The application's brute force protection relies on a cache mechanism that tracks login attempts for each user. This cache is limited to a `defaultMaxCacheSize` of 1000 entries. An attacker can overflow this cache by bombarding it with login attempts for different users, thereby pushing out the admin account's failed attempts and effectively resetting the rate limit for that account. This is a severe vulnerability that enables attackers to perform brute force attacks at an accelerated rate, especially targeting the default admin account. Users should upgrade to version 2.8.13, 2.9.9, or 2.10.4 to receive a patch.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Argoproj | Argo Cd | < 2.8.13 |
Related Weaknesses (CWE)
References
- https://argo-cd.readthedocs.io/en/stable/security_considerations/#cve-2020-8827-Vendor Advisory
- https://github.com/argoproj/argo-cd/commit/17b0df1168a4c535f6f37e95f25ed7cd81e1fPatch
- https://github.com/argoproj/argo-cd/commit/6e181d72b31522f886a2afa029d5b26d7912ePatch
- https://github.com/argoproj/argo-cd/commit/cebb6538f7944c87ca2fecb5d17f8baacc431Patch
- https://github.com/argoproj/argo-cd/security/advisories/GHSA-2vgg-9h6w-m454ExploitVendor Advisory
- https://argo-cd.readthedocs.io/en/stable/security_considerations/#cve-2020-8827-Vendor Advisory
- https://github.com/argoproj/argo-cd/commit/17b0df1168a4c535f6f37e95f25ed7cd81e1fPatch
- https://github.com/argoproj/argo-cd/commit/6e181d72b31522f886a2afa029d5b26d7912ePatch
- https://github.com/argoproj/argo-cd/commit/cebb6538f7944c87ca2fecb5d17f8baacc431Patch
- https://github.com/argoproj/argo-cd/security/advisories/GHSA-2vgg-9h6w-m454ExploitVendor Advisory
FAQ
What is CVE-2024-21662?
CVE-2024-21662 is a vulnerability with a CVSS score of 7.5 (HIGH). Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Prior to versions 2.8.13, 2.9.9, and 2.10.4, an attacker can effectively bypass the rate limit and brute force protections by ...
How severe is CVE-2024-21662?
CVE-2024-21662 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-21662?
Check the references section above for vendor advisories and patch information. Affected products include: Argoproj Argo Cd.