CVE-2020-35498

moderate-risk
Published 2021-02-11

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.

Do I need to act?

~
5.8% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (4)

Affected Vendors

Debian Fedoraproject Openvswitch

References (12)

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1908845
Mailing List https://lists.debian.org/debian-lts-announce/2021/02/msg00032.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...
https://security.gentoo.org/glsa/202311-16
Third Party Advisory https://www.debian.org/security/2021/dsa-4852
Mailing List https://www.openwall.com/lists/oss-security/2021/02/10/4
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1908845
Mailing List https://lists.debian.org/debian-lts-announce/2021/02/msg00032.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...
https://security.gentoo.org/glsa/202311-16
Third Party Advisory https://www.debian.org/security/2021/dsa-4852
Mailing List https://www.openwall.com/lists/oss-security/2021/02/10/4
45
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 9/34 · Low
Exposure 10/34 · Low