CVE-2020-8165

high-risk
Published 2020-06-19

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.

Do I need to act?

!
90.1% chance of exploitation in next 30 days
EPSS score — higher than 10% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (6)

Affected Vendors

Debian Rubyonrails Opensuse

References (17)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00031.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00034.html
Mailing List https://groups.google.com/g/rubyonrails-security/c/bv6fW4S0Y1c
Exploit https://hackerone.com/reports/413388
Mailing List https://lists.debian.org/debian-lts-announce/2020/06/msg00022.html
Mailing List https://lists.debian.org/debian-lts-announce/2020/07/msg00013.html
Vendor Advisory https://weblog.rubyonrails.org/2020/5/18/Rails-5-2-4-3-and-6-0-3-1-have-been-rel...
Third Party Advisory https://www.debian.org/security/2020/dsa-4766
Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00031.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00034.html
Mailing List https://groups.google.com/g/rubyonrails-security/c/bv6fW4S0Y1c
Exploit https://hackerone.com/reports/413388
Mailing List https://lists.debian.org/debian-lts-announce/2020/06/msg00022.html
Mailing List https://lists.debian.org/debian-lts-announce/2020/07/msg00013.html
https://security.netapp.com/advisory/ntap-20250509-0002/
Vendor Advisory https://weblog.rubyonrails.org/2020/5/18/Rails-5-2-4-3-and-6-0-3-1-have-been-rel...
Third Party Advisory https://www.debian.org/security/2020/dsa-4766
65
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 20/34 · Moderate
Exposure 13/34 · Low