Insufficient Entropy Affecting libstdc++ package, versions <0:8.3.1-5.el8
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Test your applications- Snyk ID SNYK-CENTOS8-LIBSTDC-2039557
- published 26 Jul 2021
- disclosed 2 Sep 2019
Introduced: 2 Sep 2019
CVE-2019-15847 Open this link in a new tabHow to fix?
Upgrade Centos:8
libstdc++
to version 0:8.3.1-5.el8 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libstdc++
package and not the libstdc++
package as distributed by Centos
.
See How to fix?
for Centos: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://access.redhat.com/security/cve/CVE-2019-15847
- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91481
- https://access.redhat.com/errata/RHSA-2020:1864
- 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