CVE & CISA-KEV Catalog

CVE-2019-1549

MEDIUMEPSS 93th pctl
5.3
CVSS v3
NVD

Description

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).

CWE-330

How to fix

Remediation Available
opensslDebian
Fixed in:1.1.1d-1CVE-2019-1549
Fixed in:1.1.1d-1CVE-2019-1549
Fixed in:1.1.1d-1CVE-2019-1549
Fixed in:1.1.1d-1CVE-2019-1549
libssl1.0.0Ubuntu
Fixed in:1.0.2g-1ubuntu4.16USN-4376-1
libssl1.1Ubuntu
Fixed in:1.1.1-1ubuntu2.1~18.04.6USN-4376-1
opensslUbuntu
Fixed in:1.0.2g-1ubuntu4.16USN-4376-1
Fixed in:1.1.1-1ubuntu2.1~18.04.6USN-4376-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityLow
IntegrityNone
AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

6.23%probability of exploitation in 30 days
93rdpercentile

High risk: more likely to be exploited than 93% of all known CVEs.

References

Vendor Advisory1
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.