CVE-2020-25705

CVE Details

Release Date:

2020-11-17

Description

A flaw in the way reply ICMP packets are limited in the Linux kernel functionality was found that allows to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypassing 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. Kernel versions before 5.10 may be vulnerable to this issue.

See more information about CVE-2020-25705 from MITRE CVE dictionary and NIST NVD

CVSS v3.0 metrics

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
Scope:	Unchanged	Confidentiality Impact:	High
Integrity Impact:	High	Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (kernel-uek)	ELSA-2021-9002	2021-01-07
Oracle Linux version 7 (kernel)	ELSA-2021-0856	2021-03-17
Oracle Linux version 7 (kernel-uek)	ELSA-2021-9002	2021-01-07
Oracle Linux version 7 (kernel-uek)	ELSA-2021-9006	2021-01-12
Oracle Linux version 7 (kernel-uek-container)	ELSA-2021-9007	2021-01-12
Oracle Linux version 8 (kernel)	ELSA-2021-0558	2021-02-17
Oracle Linux version 8 (kernel-uek)	ELSA-2021-9006	2021-01-12
Oracle Linux version 8 (kernel-uek-container)	ELSA-2021-9007	2021-01-12
Oracle VM version 3.4 (kernel-uek)	OVMSA-2021-0001	2021-01-07

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