GNU gcc up to 9.x POWER9 Backend __builtin_darn entropy

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in GNU gcc up to 9.x and classified as critical. This affects the function __builtin_darn of the component POWER9 Backend. This manipulation causes entropy. This vulnerability appears as CVE-2019-15847. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in GNU gcc up to 9.x. Affected by this vulnerability is the function __builtin_darn of the component POWER9 Backend. The manipulation with an unknown input leads to a entropy vulnerability. The CWE definition for the vulnerability is CWE-331. The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 10/22/2019 (Website). The advisory is shared at lists.opensuse.org. This vulnerability is known as CVE-2019-15847 since 09/02/2019. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1600.001 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 266284 (NewStart CGSL MAIN 6.06 : gcc Vulnerability (NS-SA-2025-0227)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 10.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (266284). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Entropy
CWE: CWE-331 / CWE-330 / CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 266284
Nessus Name: NewStart CGSL MAIN 6.06 : gcc Vulnerability (NS-SA-2025-0227)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: gcc 10.0

Timelineinfo

09/02/2019 🔍
09/03/2019 +1 days 🔍
10/22/2019 +49 days 🔍
10/01/2025 +2171 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: lists.opensuse.org
Status: Confirmed

CVE: CVE-2019-15847 (🔍)
GCVE (CVE): GCVE-0-2019-15847
GCVE (VulDB): GCVE-100-141193

Entryinfo

Created: 09/03/2019 10:58
Updated: 10/01/2025 02:39
Changes: 09/03/2019 10:58 (41), 03/06/2020 13:14 (16), 12/11/2023 10:42 (4), 10/01/2025 02:39 (18)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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