CVE-2019-1549 Fork Protection

2019-09-1000:00:00

openssl

www.cve.org

5.1 Medium

AI Score

Confidence

High

0.011 Low

EPSS

Percentile

84.8%

JSON

OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c).

CNA Affected

[
  {
    "product": "OpenSSL",
    "vendor": "OpenSSL",
    "versions": [
      {
        "status": "affected",
        "version": "Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c)"
      }
    ]
  }
]