CVE-2020-1749

EUVD-2020-12580

09.09.2020, 15:15

A flaw was found in the Linux kernel's implementation of some networking protocols in IPsec, such as VXLAN and GENEVE tunnels over IPv6. When an encrypted tunnel is created between two hosts, the kernel isn't correctly routing tunneled data over the encrypted link; rather sending the data unencrypted. This would allow anyone in between the two endpoints to read the traffic unencrypted. The main threat from this vulnerability is to data confidentiality.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
redhat	CNA	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: 36%

Affected Products (NVD)

Vendor	Product	Version
linux	linux_kernel	-
redhat	enterprise_linux	7.0
redhat	enterprise_mrg	2.0

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

linux

bookworm	6.1.106-3 fixed
bookworm (security)	6.1.112-1 fixed
bullseye	5.10.223-1 fixed
bullseye (security)	5.10.226-1 fixed
sid	6.11.6-1 fixed
trixie	6.11.5-1 fixed

Ubuntu Releases

Ubuntu Product

Codename

linux

bionic	Fixed 4.15.0-106.107 released
eoan	Fixed 5.3.0-40.32 released
focal	not-affected
trusty	ignored
xenial	Fixed 4.4.0-184.214 released

linux-aws

bionic	Fixed 4.15.0-1073.77 released
eoan	Fixed 5.3.0-1011.12 released
focal	not-affected
trusty	Fixed 4.4.0-1073.77 released
xenial	Fixed 4.4.0-1109.120 released

linux-aws-5.0

bionic	ignored
eoan	dne
focal	dne
trusty	dne
xenial	dne

linux-aws-5.3

bionic	not-affected
eoan	dne
focal	dne
trusty	dne
xenial	dne

linux-aws-hwe

bionic	dne
eoan	dne
focal	dne
trusty	dne
xenial	Fixed 4.15.0-1073.77~16.04.1 released

linux-azure

bionic	ignored
eoan	Fixed 5.3.0-1013.14 released
focal	not-affected
trusty	Fixed 4.15.0-1089.99~14.04.1 released
xenial	Fixed 4.15.0-1089.99~16.04.1 released

linux-azure-4.15

bionic	Fixed 4.15.0-1089.99 released
eoan	dne
focal	dne
trusty	dne
xenial	dne

linux-azure-5.3

bionic	Fixed 5.3.0-1013.14~18.04.1 released
eoan	dne
focal	dne
trusty	dne
xenial	dne

linux-azure-edge

bionic	ignored
eoan	dne
focal	dne
trusty	dne
xenial	dne

linux-gcp

bionic	ignored
eoan	Fixed 5.3.0-1012.13 released
focal	not-affected
trusty	dne
xenial	Fixed 4.15.0-1077.87~16.04.1 released

linux-gcp-4.15

bionic	Fixed 4.15.0-1077.87 released
eoan	dne
focal	dne
trusty	dne
xenial	dne

linux-gcp-5.3

bionic	Fixed 5.3.0-1012.13~18.04.1 released
eoan	dne
focal	dne
trusty	dne
xenial	dne

linux-gcp-edge

bionic	ignored
eoan	dne
focal	dne
trusty	dne
xenial	dne

linux-gke-4.15

bionic	Fixed 4.15.0-1063.66 released
eoan	dne
focal	dne
trusty	dne
xenial	dne

linux-gke-5.0

bionic	Fixed 5.0.0-1042.43 released
eoan	dne
focal	dne
trusty	dne
xenial	dne

linux-gke-5.3

bionic	Fixed 5.3.0-1012.13~18.04.1 released
eoan	dne
focal	dne
trusty	dne
xenial	dne

linux-hwe

bionic	Fixed 5.3.0-40.32~18.04.1 released
eoan	dne
focal	dne
trusty	dne
xenial	Fixed 4.15.0-106.107~16.04.1 released

linux-hwe-edge

bionic	ignored
eoan	dne
focal	dne
trusty	dne
xenial	ignored

linux-kvm

bionic	Fixed 4.15.0-1067.68 released
eoan	Fixed 5.3.0-1010.11 released
focal	not-affected
trusty	dne
xenial	Fixed 4.4.0-1075.82 released

linux-lts-trusty

bionic	dne
eoan	dne
focal	dne
trusty	dne
xenial	dne

linux-lts-xenial

bionic	dne
eoan	dne
focal	dne
trusty	Fixed 4.4.0-184.214~14.04.1 released
xenial	dne

linux-oem

bionic	Fixed 4.15.0-1087.97 released
eoan	ignored
focal	dne
trusty	dne
xenial	ignored

linux-oem-5.6

bionic	dne
eoan	dne
focal	not-affected
trusty	dne
xenial	dne

linux-oem-osp1

bionic	Fixed 5.0.0-1059.64 released
eoan	ignored
focal	dne
trusty	dne
xenial	dne

linux-oracle

bionic	Fixed 4.15.0-1045.49 released
eoan	Fixed 5.3.0-1009.10 released
focal	not-affected
trusty	dne
xenial	Fixed 4.15.0-1045.49~16.04.1 released

linux-oracle-5.0

bionic	ignored
eoan	dne
focal	dne
trusty	dne
xenial	dne

linux-oracle-5.3

bionic	not-affected
eoan	dne
focal	dne
trusty	dne
xenial	dne

linux-raspi

bionic	dne
eoan	dne
focal	not-affected
trusty	dne
xenial	dne

linux-raspi2

bionic	Fixed 4.15.0-1063.67 released
eoan	Fixed 5.3.0-1018.20 released
focal	not-affected
trusty	dne
xenial	Fixed 4.4.0-1134.143 released

linux-raspi2-5.3

bionic	Fixed 5.3.0-1018.20~18.04.1 released
eoan	dne
focal	dne
trusty	dne
xenial	dne

linux-riscv

bionic	dne
eoan	dne
focal	not-affected
trusty	dne
xenial	dne

linux-snapdragon

bionic	Fixed 4.15.0-1080.87 released
eoan	dne
focal	dne
trusty	dne
xenial	Fixed 4.4.0-1138.146 released

Common Weakness Enumeration

CWE-319 - Cleartext Transmission of Sensitive Information
The software transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1749

https://security.netapp.com/advisory/ntap-20201222-0001/

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1749

https://security.netapp.com/advisory/ntap-20201222-0001/