CVE-2020-8165
First published: Tue May 26 2020(Updated: )
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.
Credit: support@hackerone.com support@hackerone.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| rubygems/activesupport | >=6.0.0<=6.0.3 | 6.0.3.1 |
| rubygems/activesupport | >=5.0.0<=5.2.4.2 | 5.2.4.3 |
| Rubyonrails Rails | <5.2.4.3 | |
| Rubyonrails Rails | >=6.0.0<6.0.3.1 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| openSUSE Leap | =15.1 | |
| openSUSE Leap | =15.2 | |
| debian/rails | 2:5.2.2.1+dfsg-1+deb10u3 2:5.2.2.1+dfsg-1+deb10u5 2:6.0.3.7+dfsg-2+deb11u2 2:6.1.7.3+dfsg-1 2:6.1.7.3+dfsg-2 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2020-8165
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activesupport/CVE-2020-8165.yml
- https://groups.google.com/forum/#!topic/rubyonrails-security/bv6fW4S0Y1c
- https://weblog.rubyonrails.org/2020/5/18/Rails-5-2-4-3-and-6-0-3-1-have-been-released/
- https://hackerone.com/reports/413388
- https://groups.google.com/g/rubyonrails-security/c/bv6fW4S0Y1c
- https://lists.debian.org/debian-lts-announce/2020/06/msg00022.html
- https://lists.debian.org/debian-lts-announce/2020/07/msg00013.html
- https://www.debian.org/security/2020/dsa-4766
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00031.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00034.html
- https://github.com/advisories/GHSA-2p68-f74v-9wc6 (Advisory)
- https://weblog.rubyonrails.org/2020/5/18/Rails-5-2-4-3-and-6-0-3-1-have-been-released
- https://github.com/rails/rails/commit/f7e077f85e61fc0b7381963eda0ceb0e457546b5
- https://github.com/rails/rails/commit/467e3399c9007996c03ffe3212689d48dd25ae99
- https://github.com/rails/rails/commit/9f8ec3535247ac41a9c92e84ddc7a3b771bc318b
- https://security-tracker.debian.org/tracker/CVE-2020-8165
Frequently Asked Questions
What is CVE-2020-8165?
CVE-2020-8165 is a deserialization of untrusted data vulnerability in Rails.
How severe is CVE-2020-8165?
CVE-2020-8165 has a severity rating of 9.8 (critical).
Which versions of Rails are affected by CVE-2020-8165?
Rails versions below 5.2.4.3 and below 6.0.3.1 are affected by CVE-2020-8165.
What is the impact of CVE-2020-8165?
The vulnerability allows an attacker to execute arbitrary code by writing malicious data to the cache.
How can I fix CVE-2020-8165?
To fix CVE-2020-8165, upgrade Rails to version 5.2.4.3 or 6.0.3.1 or apply the recommended patches.
- collector/github-advisory-latest
- alias/GHSA-2p68-f74v-9wc6
- alias/CVE-2020-8165
- collector/github-advisory
- collector/nvd-index
- collector/security-tracker-debian
- collector/nvd-cve
- agent/references
- agent/severity
- agent/weakness
- agent/author
- agent/description
- agent/type
- agent/event
- agent/last-modified-date
- agent/first-publish-date
- agent/remedy
- agent/softwarecombine
- agent/tags
- collector/mitre-cve
- source/MITRE
- package-manager/rubygems
- vendor/rubyonrails
- canonical/rubyonrails rails
- version/rubyonrails rails/6.0.0
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/8.0
- version/debian debian linux/9.0
- version/debian debian linux/10.0
- vendor/opensuse
- canonical/opensuse leap
- version/opensuse leap/15.1
- version/opensuse leap/15.2
- package-manager/debian