#VU53021 Integer overflow in Squid - CVE-2021-31808
Published: May 10, 2021
Vulnerability identifier: #VU53021
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:U/U:Green
CVE-ID: CVE-2021-31808
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Squid
Squid
Software vendor:
Squid-cache.org
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 delivering responses from HTTP Range requests. A remote proxy client can send specially crafted HTTP request via the proxy server, force the server to initiate a necessary response, trigger integer overflow in Squid and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.