Vulnerability Report

CVE-2016-1902

Title: Sensiolabs Symfony Cryptographic Failures

Other

Proof Of Concept

No public PoC currently indexed for CVE-2016-1902.

CWE Category CWE-310
Published Date Jun 01, 2016
Modified Date Jun 17, 2026
Exploit Status Not Found
Score 7.5 CVSS v3.0
Exploit Probability (EPSS)
1.91%

Vulnerability Summary

CVE-2016-1902: 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.

Impacted Vendors

S
sensiolabs 1
A
auth0 1

Reference Links

http://symfony.com/blog/cve-2016-1902-securerandom-s-fallback-not-secure-when-openssl-fails http://www.debian.org/security/2016/dsa-3588 https://github.com/symfony/symfony/pull/17359 https://www.landaire.net/blog/cve-2016-1902-symfony-securerandom/ http://symfony.com/blog/cve-2016-1902-securerandom-s-fallback-not-secure-when-openssl-fails http://www.debian.org/security/2016/dsa-3588 https://github.com/symfony/symfony/pull/17359 https://www.landaire.net/blog/cve-2016-1902-symfony-securerandom/
CVSS v3.0
Source Entity [email protected]
Severity HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
5.0
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:P/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2016-1902 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Stack

No specific products linked.