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CVE-2020-8165

Published: Jun 19, 2020Updated: May 9, 2025 Sources: CVE List NVD GHSA BDUCWE-502
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
45.7%
Top 1.4%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

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 Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-502

Affected Products

railsrubyonrailsOSS Libraries
debian linuxdebian
On-premOS
Operating Systems / linux-distro
leapopensuse
On-premOS
Operating Systems / linux-distro
activesupportRubyGemsOSS Libraries
https://github.com/rails/railsn/a
rubyonrailsoss-projectUSOSS Librariesaka rails, ruby on rails, rubyonrails.org
debianoss-projectGBOperating Systemsaka debian gnu/linux
opensuseoss-projectDEOperating Systemsaka opensuse
rubygemspackage-ecosystemOSS Libraries
and 7 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

3 techniques
Execution
Initial Access
View detailed technique mapping

References

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00031.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00034.html
lists.opensuse.org
https://groups.google.com/g/rubyonrails-security/c/bv6fW4S0Y1c
groups.google.com
and 20 more references View all →

Timeline

Published
Jun 19, 2020
Last Updated
May 9, 2025

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