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

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CVE-2017-12425

Severity CVSS v4.0:
Pending analysis
Type:
CWE-190 Integer Overflow or Wraparound
Publication date:
04/08/2017
Last modified:
20/04/2025

Description

An issue was discovered in Varnish HTTP Cache 4.0.1 through 4.0.4, 4.1.0 through 4.1.7, 5.0.0, and 5.1.0 through 5.1.2. A wrong if statement in the varnishd source code means that particular invalid requests from the client can trigger an assert, related to an Integer Overflow. This causes the varnishd worker process to abort and restart, losing the cached contents in the process. An attacker can therefore crash the varnishd worker process on demand and effectively keep it from serving content - a Denial-of-Service attack. The specific source-code filename containing the incorrect statement varies across releases.

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:varnish-cache:varnish:4.0.2:rc-1:*:*:*:*:*:*
cpe:2.3:a:varnish-cache:varnish:4.0.3:rc-1:*:*:*:*:*:*
cpe:2.3:a:varnish-cache:varnish:4.0.3:rc-2:*:*:*:*:*:*
cpe:2.3:a:varnish-cache:varnish:4.0.3:rc-2-proper:*:*:*:*:*:*
cpe:2.3:a:varnish-cache:varnish:4.0.3:rc-3:*:*:*:*:*:*
cpe:2.3:a:varnish_cache_project:varnish_cache:4.0.1:*:*:*:*:*:*:*
cpe:2.3:a:varnish_cache_project:varnish_cache:4.0.2:*:*:*:*:*:*:*
cpe:2.3:a:varnish_cache_project:varnish_cache:4.0.3:*:*:*:*:*:*:*
cpe:2.3:a:varnish_cache_project:varnish_cache:4.0.4:*:*:*:*:*:*:*
cpe:2.3:a:varnish-cache:varnish:4.1.0:*:*:*:*:*:*:*
cpe:2.3:a:varnish-software:varnish_cache:4.1.0:beta1:*:*:*:*:*:*
cpe:2.3:a:varnish-software:varnish_cache:4.1.0:technology_preview1:*:*:*:*:*:*
cpe:2.3:a:varnish-software:varnish_cache:4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:varnish-software:varnish_cache:4.1.1:beta1:*:*:*:*:*:*
cpe:2.3:a:varnish-software:varnish_cache:4.1.1:beta2:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools