SARA / Free Tools / CVE / CVE-2019-1549

CVE-2019-1549 — OpenSSL 1

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

CVSS
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EPSS
3.55% (top 12.40%)
CWE
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Published
2019-09-10T16:58:35.361Z
Last modified
2024-09-16T22:56:57.501Z
CVSS vector
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01What is this vulnerability?

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…

02Affected products

VendorProductVersions
OpenSSLOpenSSLFixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c)

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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