RCE in Rubyonrails Rails
CVE-2020-8163
The is a code injection vulnerability in versions of Rails prior to 5.0.1 that wouldallow an attacker who controlled the `locals` argument of a `render` call to perform a RCE.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.825 (99.7th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.820 · newest: 0.825 · change: +0.004
Affected products
- Rubyonrails Rails
- Debian Linux — versions 9.0
- Https://github.com/rails/rails — versions Fixed in 4.2.11.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- hackerone.com/reports/304805 (Permissions Required, Third Party Advisory)
- groups.google.com/g/rubyonrails-security/c/hWuKcHyoKh0 (Patch, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/07/msg00013.html (mailing-list, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/158604/Ruby-On-Rails-5.0.1-Remote-Code-Execution… (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-8163?
- CVE-2020-8163 is a high-severity vulnerability in Rubyonrails Rails, classified under Code Injection. CVSS score: 8.8/10. Published 2020-07-02.
- How severe is CVE-2020-8163?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2020-8163 known to be exploited?
- 40 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.