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CVE-2021-20322

Description

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.

Risk Information

Base Score
7.4
MODERATE
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS Score
Exploitation Probability
0.114

Associated Vulnerability

VulnerabilityOS Platform
SUSE-SU-2021:3848-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-4.12.14-16.80.1.x86_64.rpmLinux
SUSE-SU-2021:3848-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-base-4.12.14-16.80.1.x86_64.rpmLinux
SUSE-SU-2021:3848-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-base-debuginfo-4.12.14-16.80.1.x86_64.rpmLinux
SUSE-SU-2021:3848-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-debuginfo-4.12.14-16.80.1.x86_64.rpmLinux
SUSE-SU-2021:3848-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-debugsource-4.12.14-16.80.1.x86_64.rpmLinux
SUSE-SU-2021:3848-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-devel-4.12.14-16.80.1.x86_64.rpmLinux
SUSE-SU-2021:3848-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-devel-azure-4.12.14-16.80.1.noarch.rpmLinux
SUSE-SU-2021:3848-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-source-azure-4.12.14-16.80.1.noarch.rpmLinux
SUSE-SU-2021:3848-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-syms-azure-4.12.14-16.80.1.x86_64.rpmLinux
SUSE-SU-2021:3877-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-4.12.14-122.103.1.x86_64.rpmLinux
SUSE-SU-2021:3877-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-base-4.12.14-122.103.1.x86_64.rpmLinux
SUSE-SU-2021:3877-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-base-debuginfo-4.12.14-122.103.1.x86_64.rpmLinux
SUSE-SU-2021:3877-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-debuginfo-4.12.14-122.103.1.x86_64.rpmLinux
SUSE-SU-2021:3877-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-debugsource-4.12.14-122.103.1.x86_64.rpmLinux
SUSE-SU-2021:3877-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-devel-4.12.14-122.103.1.x86_64.rpmLinux
SUSE-SU-2021:3877-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-devel-debuginfo-4.12.14-122.103.1.x86_64.rpmLinux
SUSE-SU-2021:3877-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-devel-4.12.14-122.103.1.noarch.rpmLinux
SUSE-SU-2021:3877-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-macros-4.12.14-122.103.1.noarch.rpmLinux
SUSE-SU-2021:3877-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-source-4.12.14-122.103.1.noarch.rpmLinux
SUSE-SU-2021:3877-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-syms-4.12.14-122.103.1.x86_64.rpmLinux
Linux kernel (USN-5268-1) linux-image-kvm_4.15.0.1106.102_amd64.debLinux
Linux kernel (USN-5268-1) linux-image-generic_4.15.0.167.156_i386.debLinux
Linux kernel (USN-5268-1) linux-image-generic_4.15.0.167.156_amd64.debLinux
Linux kernel (USN-5268-1) linux-image-virtual_4.15.0.167.156_i386.debLinux
Linux kernel (USN-5268-1) linux-image-virtual_4.15.0.167.156_amd64.debLinux
Linux kernel (USN-5268-1) linux-image-dell300x_4.15.0.1034.36_amd64.debLinux
Linux kernel (USN-5268-1) linux-image-lowlatency_4.15.0.167.156_i386.debLinux
Linux kernel (USN-5268-1) linux-image-lowlatency_4.15.0.167.156_amd64.debLinux
Linux kernel (USN-5268-1) linux-image-aws-lts-18.04_4.15.0.1119.122_amd64.debLinux
Linux kernel (USN-5268-1) linux-image-gcp-lts-18.04_4.15.0.1115.134_amd64.debLinux
Linux kernel (USN-5268-1) linux-image-4.15.0-1106-kvm_4.15.0-1106.108_amd64.debLinux
Linux kernel (USN-5268-1) linux-image-4.15.0-1115-gcp_4.15.0-1115.129_amd64.debLinux
Linux kernel (USN-5268-1) linux-image-oracle-lts-18.04_4.15.0.1086.96_amd64.debLinux
Linux kernel (USN-5268-1) linux-image-4.15.0-1086-oracle_4.15.0-1086.94_amd64.debLinux
Linux kernel (USN-5268-1) linux-image-4.15.0-167-generic_4.15.0-167.175_i386.debLinux
Linux kernel (USN-5268-1) linux-image-4.15.0-167-generic_4.15.0-167.175_amd64.debLinux
Linux kernel (USN-5268-1) linux-image-4.15.0-1034-dell300x_4.15.0-1034.39_amd64.debLinux
Linux kernel (USN-5268-1) linux-image-4.15.0-167-lowlatency_4.15.0-167.175_i386.debLinux
Linux kernel (USN-5268-1) linux-image-4.15.0-167-lowlatency_4.15.0-167.175_amd64.debLinux
Kernel-uek update (ELSA-2022-9260) kernel-uek-4.1.12-124.61.2.el7uek.x86_64.rpmLinux
Kernel-uek-debug update (ELSA-2022-9260) kernel-uek-debug-4.1.12-124.61.2.el7uek.x86_64.rpmLinux
Kernel-uek-debug-devel update (ELSA-2022-9260) kernel-uek-debug-devel-4.1.12-124.61.2.el7uek.x86_64.rpmLinux
Kernel-uek-devel update (ELSA-2022-9260) kernel-uek-devel-4.1.12-124.61.2.el7uek.x86_64.rpmLinux
Kernel-uek-doc update (ELSA-2022-9260) kernel-uek-doc-4.1.12-124.61.2.el7uek.noarch.rpmLinux
Kernel-uek-firmware update (ELSA-2022-9260) kernel-uek-firmware-4.1.12-124.61.2.el7uek.noarch.rpmLinux
(RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-4.18.0-372.9.1.el8.x86_64.rpmLinux
(RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-abi-stablelists-4.18.0-372.9.1.el8.noarch.rpmLinux
(RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-core-4.18.0-372.9.1.el8.x86_64.rpmLinux
(RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-cross-headers-4.18.0-372.9.1.el8.x86_64.rpmLinux
(RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-debug-4.18.0-372.9.1.el8.x86_64.rpmLinux
(RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-debug-core-4.18.0-372.9.1.el8.x86_64.rpmLinux
(RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-debug-modules-4.18.0-372.9.1.el8.x86_64.rpmLinux
(RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-debug-modules-extra-4.18.0-372.9.1.el8.x86_64.rpmLinux
(RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-doc-4.18.0-372.9.1.el8.noarch.rpmLinux
(RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-modules-4.18.0-372.9.1.el8.x86_64.rpmLinux
(RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-modules-extra-4.18.0-372.9.1.el8.x86_64.rpmLinux
(RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-tools-4.18.0-372.9.1.el8.x86_64.rpmLinux
(RHSA-2022:1988) kernel security, bug fix, and enhancement update kernel-tools-libs-4.18.0-372.9.1.el8.x86_64.rpmLinux
(RHSA-2022:1988) kernel security, bug fix, and enhancement update python3-perf-4.18.0-372.9.1.el8.x86_64.rpmLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234