Information Exposure Affecting perf package, versions <0:4.18.0-193.37.1.el8_2
Threat Intelligence
EPSS
0.43% (76th
percentile)
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Test your applications- Snyk ID SNYK-RHEL8-PERF-3888212
- published 26 Jul 2021
- disclosed 29 Jul 2020
Introduced: 29 Jul 2020
CVE-2020-16166 Open this link in a new tabHow to fix?
Upgrade RHEL:8 perf to version 0:4.18.0-193.37.1.el8_2 or higher.
This issue was patched in RHSA-2020:5418.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
The Linux kernel through 5.7.11 allows remote attackers to make observations that help to obtain sensitive information about the internal state of the network RNG, aka CID-f227e3ec3b5c. This is related to drivers/char/random.c and kernel/time/timer.c.
References
- https://security.netapp.com/advisory/ntap-20200814-0004/
- https://access.redhat.com/security/cve/CVE-2020-16166
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AAPTLPAEKVAJYJ4LHN7VH4CN2W75R2YW/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MFBCLQWJI5I4G25TVJNLXLAXJ4MERQNW/
- https://arxiv.org/pdf/2012.07432.pdf
- https://github.com/torvalds/linux/commit/f227e3ec3b5cad859ad15666874405e8c1bbc1d4
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f227e3ec3b5cad859ad15666874405e8c1bbc1d4
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c51f8f88d705e06bd696d7510aff22b33eb8e638
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
- https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
- https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.html
- https://usn.ubuntu.com/4525-1/
- https://usn.ubuntu.com/4526-1/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AAPTLPAEKVAJYJ4LHN7VH4CN2W75R2YW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MFBCLQWJI5I4G25TVJNLXLAXJ4MERQNW/
CVSS Scores
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