Denial of service in Ruby on Rails



Published: 2021-05-10
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-22902
CWE-ID CWE-416
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Ruby on Rails
Universal components / Libraries / Scripting languages

Vendor Rails

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Use-after-free

EUVDB-ID: #VU53002

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-22902

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in the Action Dispatch. A remote attacker can send specially crafted Accept headers and cause a denial of service condition on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Ruby on Rails: 6.0.0 - 6.1.3.2


CPE2.3 External links

http://seclists.org/oss-sec/2021/q2/99

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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