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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Mixed 6 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2.7.9+dfsg-1 |
| sid | Fixed | 2.7.9+dfsg-1 |
| forky | Fixed | 2.7.9+dfsg-1 |
| bullseye | Fixed | 2.7.9+dfsg-1 |
| bookworm | Fixed | 2.7.9+dfsg-1 |
| 8.0 | Affected | — |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Packagist | symfony/security-core | >=2.4.0,<2.6.13 | 2.6.13 |
| Packagist | symfony/security-core | >=2.7.0,<2.7.9 | 2.7.9 |
| Packagist | symfony/security | >=2.3.0,<2.3.37 | 2.3.37 |
| Packagist | symfony/security | >=2.4.0,<2.6.13 | 2.6.13 |
| Packagist | symfony/security | >=2.7.0,<2.7.9 | 2.7.9 |
| Packagist | symfony/symfony | >=2.3.0,<2.3.37 | 2.3.37 |
| Packagist | symfony/symfony | >=2.4.0,<2.6.13 | 2.6.13 |
| Packagist | symfony/symfony | >=2.7.0,<2.7.9 | 2.7.9 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| sensiolabs | symfony | {"endIncluding":"2.3.36"} | |
| 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 | |
References
- 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/
- https://nvd.nist.gov/vuln/detail/CVE-2016-1902
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-core/CVE-2016-1902.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2016-1902.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2016-1902.yaml
- https://symfony.com/cve-2016-1902
- https://www.landaire.net/blog/cve-2016-1902-symfony-securerandom
- https://security-tracker.debian.org/tracker/CVE-2016-1902
CWEs
CWE-310
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.