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CVE-2020-1749

Public on 2020-06-01
Modified on 2020-06-03
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.

Severity
Medium
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CVSS v3 Base Score
7.5
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 kernel 2020-06-01 12:24 ALAS-2020-1377
Amazon Linux 2 - Core kernel 2020-06-01 22:37 ALAS2-2020-1431
Amazon Linux 2 - Livepatch Extra kernel-livepatch-4.14.173-137.228 2020-06-20 03:37 ALAS2LIVEPATCH-2020-021
Amazon Linux 2 - Livepatch Extra kernel-livepatch-4.14.173-137.229 2020-06-20 03:37 ALAS2LIVEPATCH-2020-022
Amazon Linux 2 - Livepatch Extra kernel-livepatch-4.14.177-139.253 2020-06-20 03:37 ALAS2LIVEPATCH-2020-023
Amazon Linux 2 - Livepatch Extra kernel-livepatch-4.14.177-139.254 2020-06-20 03:37 ALAS2LIVEPATCH-2020-024

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD CVSSv2 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N
NVD CVSSv3 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N