#VU53020 Input validation error in Squid - CVE-2021-31806

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Main Vulnerability Database Vulnerabilities #VU53020

#VU53020 Input validation error in Squid - CVE-2021-31806

Published: May 10, 2021 / Updated: October 21, 2021


Vulnerability identifier: #VU53020
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:A/U:Green
CVE-ID: CVE-2021-31806
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: Public exploit is available
Vulnerable software:
Squid
Software vendor:
Squid-cache.org

Description

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

The vulnerability exists due to insufficient validation of user-supplied input when performing HTTP Range requests. A remote proxy client can send specially crafted HTTP request via the proxy server  and perform a denial of service (DoS) attack.


Remediation

Install updates from vendor's website.

External links