CVE-2020-35498 — Vulnetix

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CVE-2020-35498 PUBLISHED

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.

EPSS 5.76% · 90.4th percentile

Risk Scores

EPSS Score

5.76%

90.4th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:16.04:LTS	openvswitch	0, 2.4.0-0ubuntu5, 2.5.0~git20160129.46a88d9-0ubuntu1
Ubuntu:20.04:LTS	openvswitch	*, 2.12.1~git20191107.7accd1302-0ubuntu1, 2.12.90~git20200107.af683565b-0ubuntu1
Ubuntu:18.04:LTS	openvswitch	2.8.0-0ubuntu2, 2.8.1-0ubuntu2, 2.8.1-0ubuntu3

Timeline

Feb 10, 2021 CVE Published
Apr 14, 2021 EPSS Score
Jan 6, 2022 EPSS Score
Apr 1, 2022 EPSS Score
Apr 4, 2022 EPSS Score
Mar 17, 2025 EPSS Score
Mar 19, 2025 EPSS Score
Mar 25, 2025 EPSS Score
Mar 27, 2025 EPSS Score
Mar 29, 2025 EPSS Score
Mar 30, 2025 EPSS Score
Apr 3, 2025 PoC Published

References

https://ubuntu.com/security/CVE-2020-35498 third-party-advisory
https://ubuntu.com/security/notices/USN-4729-1 vendor-advisory
https://www.cve.org/CVERecord?id=CVE-2020-35498 third-party-advisory

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