Vulnerability Description
A remote code execution vulnerability in development mode Rails <5.2.2.1, <6.0.0.beta3 can allow an attacker to guess the automatically generated development mode secret token. This secret token can be used in combination with other Rails internals to escalate to a remote code execution exploit.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Rubyonrails | Rails | < 5.2.2.1 |
| Debian | Debian Linux | 8.0 |
| Fedoraproject | Fedora | 30 |
Related Weaknesses (CWE)
References
- http://packetstormsecurity.com/files/152704/Ruby-On-Rails-DoubleTap-Development-ExploitThird Party AdvisoryVDB Entry
- https://groups.google.com/forum/#%21topic/rubyonrails-security/IsQKvDqZdKw
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-releasePatchVendor Advisory
- https://www.exploit-db.com/exploits/46785/ExploitThird Party AdvisoryVDB Entry
- http://packetstormsecurity.com/files/152704/Ruby-On-Rails-DoubleTap-Development-ExploitThird Party AdvisoryVDB Entry
- https://groups.google.com/forum/#%21topic/rubyonrails-security/IsQKvDqZdKw
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-releasePatchVendor Advisory
- https://www.exploit-db.com/exploits/46785/ExploitThird Party AdvisoryVDB Entry
FAQ
What is CVE-2019-5420?
CVE-2019-5420 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A remote code execution vulnerability in development mode Rails <5.2.2.1, <6.0.0.beta3 can allow an attacker to guess the automatically generated development mode secret token. This secret token can b...
How severe is CVE-2019-5420?
CVE-2019-5420 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2019-5420?
Check the references section above for vendor advisories and patch information. Affected products include: Rubyonrails Rails, Debian Debian Linux, Fedoraproject Fedora.