Use of Insufficiently Random Values Affecting kernel package, versions <0:4.14.285-215.501.amzn2
Threat Intelligence
EPSS
0.05% (19th
percentile)
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Test your applications- Snyk ID SNYK-AMZN2-KERNEL-2950665
- published 15 Jul 2022
- disclosed 5 Jun 2022
Introduced: 5 Jun 2022
CVE-2022-32296 Open this link in a new tabHow to fix?
Upgrade Amazon-Linux:2 kernel to version 0:4.14.285-215.501.amzn2 or higher.
This issue was patched in ALAS2-2022-1813.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are used. This occurs because of use of Algorithm 4 ("Double-Hash Port Selection Algorithm") of RFC 6056.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-32296
- https://arxiv.org/abs/2209.12993
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.9
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4c2c8f03a5ab7cb04ec64724d7d176d00bcc91e5
- https://github.com/0xkol/rfc6056-device-tracker
- https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html
- https://www.debian.org/security/2022/dsa-5173
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