CVE-2016-1902

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.40%
Vendor Advisory debian.org Vendor Advisory symfony.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://symfony.com/blog/cve-2016-1902-securerandom-s-fallback-not-secure-when-openssl-fails vendor advisory
https://github.com/symfony/symfony/pull/17359 patch
https://www.landaire.net/blog/cve-2016-1902-symfony-securerandom/
http://www.debian.org/security/2016/dsa-3588 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-1902?
CVE-2016-1902 has been scored as a high severity vulnerability.
How to fix CVE-2016-1902?
To fix CVE-2016-1902, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-1902 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-1902 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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