Is CVE-2019-15847 in the CISA KEV catalog?

No. CVE-2019-15847 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-15847?

CVE-2019-15847 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2019-15847?

CVE-2019-15847 has an EPSS score of 3.21% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-15847?

Upgrade gcc-9 on debian 11 to 9.2.1-7 or later.

CVE & CISA-KEV Catalog

CVE-2019-15847

HIGHEPSS 87th pctl

7.5

CVSS v3

NVD

Description

The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the __builtin_darn intrinsic into a single call, thus reducing the entropy of the random number generator. This occurred because a volatile operation was not specified. For example, within a single execution of a program, the output of every __builtin_darn() call may be the same.

CWE-331

How to fix

Remediation Available

gcc-9Debian

Fixed in:9.2.1-7CVE-2019-15847

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

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

3.21%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Vendor Advisory1

gcc.gnu.org

Third-Party Advisory3

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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.