CVE-2020-8165
CRITICAL 9.8EPSS 45.7%
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.
- Affected
- https://github.com/rails/rails
- CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0 NVD
- 7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P - EPSS
- 45.73% chance of exploitation in the next 30 days, 99th percentile
- Published
- 2020-06-19
- Updated
- 2025-05-09
Proof-of-concept exploits (9)
- https://hackerone.com/reports/413388
- AssassinUKG/CVE-2020-81650★ · 2021-01-15
- danielklim/cve-2020-8165-demo1★ · 2021-02-16
- dpredrag/olain-test20★ · 2021-07-11
- hybryx/CVE-2020-81654★ · 2021-01-03
- masahiro331/CVE-2020-816542★ · 2023-01-19
- progfay/CVE-2020-81650★ · 2021-01-21
- taipansec/CVE-2020-81650★ · 2020-12-25
- umiterkol/CVE-2020-8165--Auto-Shell1★ · 2020-11-13
Security advisories
- https://weblog.rubyonrails.org/2020/5/18/Rails-5-2-4-3-and-6-0-3-1-have-been-released
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00031.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00034.html
- https://groups.google.com/g/rubyonrails-security/c/bv6fW4S0Y1c
- https://lists.debian.org/debian-lts-announce/2020/06/msg00022.html
- https://lists.debian.org/debian-lts-announce/2020/07/msg00013.html
- https://www.debian.org/security/2020/dsa-4766
- advisories/GHSA-2p68-f74v-9wc6