HTTP: Squid Proxy HTTP Range Header Handling Denial of Service
This signature detects attempts to exploit a known vulnerability against Squid Proxy. A successful attack can result in a denial-of-service condition.
Extended Description
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request processing.
Affected Products
Debian debian_linux
Short Name
HTTP:DOS:SQUID-PRXY-HDR-HANDL
Severity
Minor
Recommended
False
Recommended Action
Drop
Category
HTTP
Keywords
CVE-2021-31806 CVE-2021-31807 Denial HTTP Handling Header Proxy Range Service Squid of
Release Date
12/27/2021
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3590
False Positive
Unknown
Vendors
Squid-cache
Fedoraproject
Netapp
Debian
CVSS Score
4.0