Use of Insufficiently Random Values Affecting kernel-livepatch-5_3_18-24_67-default package, versions <7-2.1
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Test your applications- Snyk ID SNYK-SLES152-KERNELLIVEPATCH53182467DEFAULT-3265499
- published 14 Apr 2022
- disclosed 14 Dec 2021
Introduced: 14 Dec 2021
CVE-2021-20322 Open this link in a new tabHow to fix?
Upgrade SLES:15.2 kernel-livepatch-5_3_18-24_67-default to version 7-2.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-5_3_18-24_67-default package and not the kernel-livepatch-5_3_18-24_67-default package as distributed by SLES.
See How to fix? for SLES:15.2 relevant fixed versions and status.
A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well.
References
- https://www.suse.com/security/cve/CVE-2021-20322.html
- https://bugzilla.suse.com/1191790
- https://bugzilla.suse.com/1191813
- https://bugzilla.suse.com/1193290
- https://bugzilla.redhat.com/show_bug.cgi?id=2014230
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.15-rc6&id=4785305c05b25a242e5314cc821f54ade4c18810
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.15-rc6&id=6457378fe796815c973f631a1904e147d6ee33b1
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/ipv4/route.c?h=v5.15-rc6&id=67d6d681e15b578c1725bad8ad079e05d1c48a8e
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/ipv6/route.c?h=v5.15-rc6&id=a00df2caffed3883c341d5685f830434312e4a43
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://security.netapp.com/advisory/ntap-20220303-0002/
- https://www.debian.org/security/2022/dsa-5096
- https://www.oracle.com/security-alerts/cpujul2022.html