CVE-2020-1749

HIGH

Linux Kernel - Cleartext Transmission of Sensitive Information in IPsec VXLAN and GENEVE Tunnels over IPv6

Title source: llm

Description

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.

References (2)

Core 2

Core References

Issue Tracking, Patch, Third Party Advisory x_refsource_confirm

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

Vendor Advisory x_refsource_confirm

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

Scores

CVSS v3 7.5

EPSS 0.0015

EPSS Percentile 35.8%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE

CWE-319

Status published

Products (3)

linux/linux_kernel

redhat/enterprise_linux 7.0

redhat/enterprise_mrg 2.0

Published Sep 09, 2020

Tracked Since Feb 18, 2026