CVE-2020-35498

Advisory lineage Upstream: 0 Downstream: 20
Modified
Published: 11 Feb 2021, 00:00
Last modified:23 Apr 2025, 19:46

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
7.8 HIGH
v2.0 (nvd)
EPSS Score
5.69% LOW
6% probability -0.08%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

11 Feb 2021, 00:00
Published
Vulnerability first disclosed
23 Apr 2025, 19:46
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v2.0•HIGH•Score: 7.8AV:N/AC:L/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 5.69%• Percentile: 91%

Techniques & Countermeasures

  • CWE-400•Uncontrolled Resource Consumption

    The product does not properly control the allocation and maintenance of a limited resource.

Affected Systems

  • debian•debian_linux

    9.0 | 10.0

  • fedoraproject•fedora

    33

  • openvswitch•openvswitch

    ≥ 2.5.0, < 2.5.12 | ≥ 2.6.0, < 2.6.10 | ≥ 2.7.0, < 2.7.13 | ≥ 2.8.0, < 2.8.11 | ≥ 2.9.0, < 2.9.9 | ≥ 2.10.0, < 2.10.7 | ≥ 2.11.0, < 2.11.6 | ≥ 2.12.0, < 2.12.3 | ≥ 2.13.0, < 2.13.3 | ≥ 2.14.0, < 2.14.2

References (6)