#VU53002 Use-after-free


Published: 2021-05-10

Vulnerability identifier: #VU53002

Vulnerability risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-22902

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Ruby on Rails
Universal components / Libraries / Scripting languages

Vendor: Rails

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


CPE

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?


Latest bulletins with this vulnerability