CVE-2019-15847
Severity
7.5HIGH
EPSS
0.5%
top 34.26%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedSep 2
Latest updateMay 24
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NExploitability: 3.9 | Impact: 3.6
Affected Packages3 packages
🔴Vulnerability Details
3GHSA▶
GHSA-rf68-2835-83vw: The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the __builtin_darn intrinsic into a single call↗2022-05-24
OSV▶
CVE-2019-15847: The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the __builtin_darn intrinsic into a single call↗2019-09-02
CVEList▶
CVE-2019-15847: The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the __builtin_darn intrinsic into a single call↗2019-09-02
📋Vendor Advisories
3Microsoft▶
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 ge↗2019-09-10
Debian▶
CVE-2019-15847: gcc-9 - The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could opti...↗2019