HTTP: Squid Proxy ESI Response Processing Denial of Service
This signature detects attempts to exploit a known vulnerability in the Edge Side Includes (ESI) component of the Squid proxy. Successful exploitation allows the attacker to cause a denial of service condition for all clients accessing the Squid service.
Extended Description
client_side_request.cc in Squid 3.x before 3.5.18 and 4.x before 4.0.10 allows remote servers to cause a denial of service (crash) via crafted Edge Side Includes (ESI) responses.
Affected Products
Squid-cache squid
References
CVE: CVE-2016-4555
Short Name
HTTP:PROXY:SQUID-PROXY-ESI-DOS
Severity
Major
Recommended
False
Recommended Action
None
Category
HTTP
Keywords
CVE-2016-4555 Denial ESI Processing Proxy Response Service Squid of
Release Date
08/25/2016
Supported Platforms
mx-19.3
vmx-19.3
vsrx-19.2
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-19.4
vsrx3bsd-19.4
srx-branch-19.4
vsrx-19.4
vmx-19.4
mx-19.4
srxevo-25.4
vsrx-26.2
srx-26.2
srx-branch-26.2
vsrx3bsd-26.2
mx-12.3
srx-12.3
srx-branch-12.3
vsrx-12.3
Sigpack Version
3602
False Positive
Rarely
Vendors
Oracle
Squid-cache
Canonical
CVSS Score
5.0