Deserialization in Rubyonrails Rails
CVE-2020-8165
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.
Vulnerability class: Insecure Deserialization
EPSS: 0.457 (98.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Rubyonrails Rails
- Debian Debian_linux — versions 8.0, 9.0, 10.0
- Opensuse Leap — versions 15.1, 15.2
- N/a Https://github.com/rails/rails — versions Fixed in 5.2.4.3, 6.0.3.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support@hackerone.com (Exploit, Patch, Third Party Advisory, x_refsource_MISC)
- support@hackerone.com (Patch, Mailing List, Third Party Advisory, x_refsource_MISC)
- support@hackerone.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- support@hackerone.com (x_refsource_CONFIRM, Vendor Advisory)
- support@hackerone.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- support@hackerone.com (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- support@hackerone.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- support@hackerone.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2020-8165?
- CVE-2020-8165 is a critical-severity vulnerability in Rubyonrails Rails, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2020-06-19.
- How severe is CVE-2020-8165?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-8165 known to be exploited?
- 19 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.