Vulnerability Name:

CVE-2016-1902 (CCN-113783)

Assigned:2016-01-18
Published:2016-01-18
Updated:2016-06-03
Summary: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.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-310
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2016-1902

Source: CCN
Type: Symfony Web site
High Performance PHP Framework for Web Development - Symfony

Source: CCN
Type: Symfony blog, January 18, 2016
CVE-2016-1902: SecureRandom's fallback not secure when OpenSSL fails

Source: CONFIRM
Type: Vendor Advisory
http://symfony.com/blog/cve-2016-1902-securerandom-s-fallback-not-secure-when-openssl-fails

Source: DEBIAN
Type: UNKNOWN
DSA-3588

Source: XF
Type: UNKNOWN
symfony-cve20161902-weak-security(113783)

Source: CONFIRM
Type: Patch
https://github.com/symfony/symfony/pull/17359

Source: MISC
Type: UNKNOWN
https://www.landaire.net/blog/cve-2016-1902-symfony-securerandom/

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2016-1902

Vulnerable Configuration:Configuration 1:
  • cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/a:sensiolabs:symfony:*:*:*:*:*:*:*:* (Version <= 2.3.36)
  • OR cpe:/a:sensiolabs:symfony:2.6.0:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.6.1:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.6.2:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.6.3:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.6.4:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.6.5:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.6.6:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.6.7:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.6.8:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.6.9:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.6.10:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.6.11:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.6.12:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.7.0:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.7.1:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.7.2:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.7.3:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.7.4:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.7.5:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.7.6:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.7.7:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.7.8:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:sensiolabs:symfony:2.3.36:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.6.12:*:*:*:*:*:*:*
  • OR cpe:/a:sensiolabs:symfony:2.7.8:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.cisecurity:def:857
    P
    		DSA-3588-1 -- symfony -- security update
    2016-07-29
    oval:com.ubuntu.xenial:def:20161902000
    V
    		CVE-2016-1902 on Ubuntu 16.04 LTS (xenial) - medium.
    2016-06-01
    oval:com.ubuntu.xenial:def:201619020000000
    V
    		CVE-2016-1902 on Ubuntu 16.04 LTS (xenial) - medium.
    2016-06-01
    BACK
    debian debian linux 8.0
    sensiolabs symfony *
    sensiolabs symfony 2.6.0
    sensiolabs symfony 2.6.1
    sensiolabs symfony 2.6.2
    sensiolabs symfony 2.6.3
    sensiolabs symfony 2.6.4
    sensiolabs symfony 2.6.5
    sensiolabs symfony 2.6.6
    sensiolabs symfony 2.6.7
    sensiolabs symfony 2.6.8
    sensiolabs symfony 2.6.9
    sensiolabs symfony 2.6.10
    sensiolabs symfony 2.6.11
    sensiolabs symfony 2.6.12
    sensiolabs symfony 2.7.0
    sensiolabs symfony 2.7.1
    sensiolabs symfony 2.7.2
    sensiolabs symfony 2.7.3
    sensiolabs symfony 2.7.4
    sensiolabs symfony 2.7.5
    sensiolabs symfony 2.7.6
    sensiolabs symfony 2.7.7
    sensiolabs symfony 2.7.8
    sensiolabs symfony 2.3.36
    sensiolabs symfony 2.6.12
    sensiolabs symfony 2.7.8