Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2016-4556

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
10/05/2016
Last modified:
12/04/2025

Description

Double free vulnerability in Esi.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 a crafted Edge Side Includes (ESI) response.

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:squid-cache:squid:3.0:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:3.1:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:3.1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:3.1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:3.1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:3.1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:3.1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:3.1.0.6:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:3.1.0.7:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:3.1.0.8:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:3.1.0.9:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:3.1.0.10:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:3.1.0.11:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:3.1.0.12:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:3.1.0.13:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools