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.
See more information about CVE-2020-1749 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
|Base Score:||7.5||Base Metrics:||AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N|
|Access Vector:||Network||Attack Complexity:||Low|
|Privileges Required:||None||User Interaction:||None|
|Integrity Impact:||None||Availability Impact:||None|
|Oracle Linux version 6 (kernel-uek)||ELSA-2020-5866||2020-10-06|
|Oracle Linux version 7 (kernel)||ELSA-2020-4060||2020-10-06|
|Oracle Linux version 7 (kernel-uek)||ELSA-2020-5866||2020-10-06|
|Oracle Linux version 8 (kernel)||ELSA-2020-1769||2020-05-05|
|Oracle VM version 3.4 (kernel-uek)||OVMSA-2020-0044||2020-10-09|
This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team