CVE-2021-31807

MEDIUM

Squid Proxy Range Header DoS

Title source: metasploit
STIX 2.1

Description

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent.

Scores

CVSS v3 6.5
EPSS 0.3371
EPSS Percentile 97.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-190
Status published
Products (19)
fedoraproject/fedora 33
fedoraproject/fedora 34
netapp/cloud_manager
squid-cache/squid 2.5.stable2
squid-cache/squid 2.5.stable3
squid-cache/squid 2.5.stable4
squid-cache/squid 2.5.stable5
squid-cache/squid 2.5.stable6
squid-cache/squid 2.5.stable7
squid-cache/squid 2.5.stable8
... and 9 more
Published Jun 08, 2021
Tracked Since Feb 18, 2026