CVE-2020-8165
ActiveSupport potentially unintended unmarshalling of user-provided objects in MemCacheStore and RedisCacheStore
9.8
CRITICAL
CVSS 3.1
EPSS 90.1%
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.
How to fix CVE-2020-8165
To remediate CVE-2020-8165, upgrade the affected package to a fixed version below.
- —upgrade to 2:5.2.4.3+dfsg-1 or later
- —upgrade to 5.2.4.3 or later
Is CVE-2020-8165 being exploited?
Likely — EPSS is 90.1%, placing CVE-2020-8165 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (2)
- from 0, < 2:5.2.4.3+dfsg-1
- >= 5.0.0, < 5.2.4.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |