CVE-2020-35498
Publication date 10 February 2021
Last updated 24 July 2024
Ubuntu priority
A vulnerability was found in openvswitch. A limitation in the implementation of userspace packet parsing can allow a malicious user to send a specially crafted packet causing the resulting megaflow in the kernel to be too wide, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| openvswitch | ||
| 20.04 LTS focal |
Fixed 2.13.1-0ubuntu0.20.04.4
|
|
| 18.04 LTS bionic |
Fixed 2.9.8-0ubuntu0.18.04.2
|
|
| 16.04 LTS xenial |
Fixed 2.5.9-0ubuntu0.16.04.3
|
|
| 14.04 LTS trusty | Not in release |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.5 · High
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-4729-1
- Open vSwitch vulnerability
- 10 February 2021