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

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CVE-2016-1902

Severity CVSS v4.0:
Pending analysis
Type:
CWE-310 Cryptographic Issues
Publication date:
01/06/2016
Last modified:
12/04/2025

Description

The nextBytes function in the SecureRandom class in Symfony before 2.3.37, 2.6.x before 2.6.13, and 2.7.x before 2.7.9 does not properly generate random numbers when used with PHP 5.x without the paragonie/random_compat library and the openssl_random_pseudo_bytes function fails, which makes it easier for attackers to defeat cryptographic protection mechanisms via unspecified vectors.

Impact

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

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

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

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

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

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* 2.3.36 (including)
cpe:2.3:a:sensiolabs:symfony:2.6.0:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.1:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.2:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.3:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.4:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.5:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.6:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.7:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.8:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.9:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.10:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.11:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:2.6.12:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools