CVE-2020-8165 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

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://hackerone.com/reports/413388 https://lists.debian.org/debian-lts-announce/2020/06/msg00022.html https://lists.debian.org/debian-lts-announce/2020/07/msg00013.html https://weblog.rubyonrails.org/2020/5/18/Rails-5-2-4-3-and-6-0-3-1-have-been-released/ https://www.debian.org/security/2020/dsa-4766

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8