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Status published
Critical
CVE-2020-8165
A deserialization of untrusted data vulnernerability exists in rails <...
Vulnerability Description
A deserialization of untrusted data vulnernerability exists in rails < 5.2.4.3, rails < 6.0.3.1 that can allow an attacker to unmarshal user-provided objects in MemCacheStore and RedisCacheStore potentially resulting in an RCE.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://hackerone.com/reports/413388
- https://groups.google.com/g/rubyonrails-security/c/bv6fW4S0Y1c
- https://lists.debian.org/debian-lts-announce/2020/06/msg00022.html
- https://weblog.rubyonrails.org/2020/5/18/Rails-5-2-4-3-and-6-0-3-1-have-been-released/
- https://lists.debian.org/debian-lts-announce/2020/07/msg00013.html
- https://www.debian.org/security/2020/dsa-4766
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00031.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00034.html
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Affected Vendor
Affected Software
https://github.com/rails/rails
Vulnerable Versions:
Fixed in 5.2.4.3, 6.0.3.1
Timeline
Official Publish:
June 19th, 2020
Last Modified:
May 9th, 2025
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H