Insufficient Entropy Affecting libstdc++ package, versions <0:8.3.1-5.0.3.el8
Threat Intelligence
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-ORACLE8-LIBSTDC-2556229
- published 10 Apr 2022
- disclosed 2 Sep 2019
Introduced: 2 Sep 2019
CVE-2019-15847 Open this link in a new tabHow to fix?
Upgrade Oracle:8 libstdc++ to version 0:8.3.1-5.0.3.el8 or higher.
This issue was patched in ELSA-2020-1864.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libstdc++ package and not the libstdc++ package as distributed by Oracle.
See How to fix? for Oracle:8 relevant fixed versions and status.
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.
References
- https://linux.oracle.com/cve/CVE-2019-15847.html
- https://linux.oracle.com/errata/ELSA-2020-1864.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00056.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00057.html
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00058.html
- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91481