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.
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
|Base Score:||7.4||Base Metrics:||AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N|
|Access Vector:||Network||Attack Complexity:||High|
|Privileges Required:||None||User Interaction:||None|
|Integrity Impact:||High||Availability Impact:||None|
|Oracle Linux version 6 (kernel-uek)||ELSA-2022-9260||2022-04-05|
|Oracle Linux version 7 (kernel-uek)||ELSA-2022-9260||2022-04-05|
|Oracle Linux version 8 (kernel)||ELSA-2022-1988||2022-05-17|
|Oracle VM version 3 (kernel-uek)||OVMSA-2022-0011||2022-04-05|
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