Insecure Randomness Affecting openssl package, versions [1.1.1,1.1.1d)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-OPENSSL-2318619
- published14 Dec 2021
- disclosed10 Sept 2019
- creditUnknown
Introduced: 10 Sep 2019
CVE-2019-1549 (opens in a new tab)How to fix?
Upgrade openssl to version 1.1.1d or higher.
Overview
Affected versions of this package are vulnerable to Insecure Randomness. 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).