Bug 1340830 (CVE-2016-1902)

Summary: CVE-2016-1902 php-symfony: SecureRandom's fallback not secure when OpenSSL fails
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: anemec, fedora, james.hogarth, shawn
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: php-symfony 2.3.37 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-01-02 08:15:27 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1340831    
Bug Blocks:    

Description Andrej Nemec 2016-05-30 11:26:51 UTC
The SecureRandom Symfony class goal is to generate secure random numbers. Several strategies are used depending on PHP's configuration. On PHP installations where the random_bytes() function is not available, Symfony falls back to using openssl_random_pseudo_bytes(). If that does not work, Symfony generates a secure random number using uniqid() and mt_rand(), which are not suitable for cryptographic contexts.

External references:


Comment 1 Andrej Nemec 2016-05-30 11:27:13 UTC
Created php-symfony tracking bugs for this issue:

Affects: epel-6 [bug 1340831]

Comment 2 Shawn Iwinski 2016-12-28 22:02:03 UTC
All dependent bugs closed.