high
7.8
CWE
400
Advisory Published
CVE Published
Updated

CVE-2020-35498

First published: Thu Dec 17 2020(Updated: )

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.

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
debian/openvswitch<=2.10.0+2018.08.28+git.8ca7c82b7d+ds1-12+deb10u2<=2.10.0+2018.08.28+git.8ca7c82b7d+ds1-12<=2.15.0~git20210104.def6eb1ea+dfsg1-4<=2.10.6+ds1-0+deb10u1
Openvswitch Openvswitch>=2.5.0<2.5.12
Openvswitch Openvswitch>=2.6.0<2.6.10
Openvswitch Openvswitch>=2.7.0<2.7.13
Openvswitch Openvswitch>=2.8.0<2.8.11
Openvswitch Openvswitch>=2.9.0<2.9.9
Openvswitch Openvswitch>=2.10.0<2.10.7
Openvswitch Openvswitch>=2.11.0<2.11.6
Openvswitch Openvswitch>=2.12.0<2.12.3
Openvswitch Openvswitch>=2.13.0<2.13.3
Openvswitch Openvswitch>=2.14.0<2.14.2
Debian Debian Linux=9.0
Debian Debian Linux=10.0
Fedoraproject Fedora=33
redhat/openvswitch2.11<0:2.11.3-86.el7fd
0:2.11.3-86.el7fd
redhat/openvswitch2.13<0:2.13.0-81.el7fd
0:2.13.0-81.el7fd
redhat/openvswitch<0:2.9.9-1.el7fd
0:2.9.9-1.el7fd
redhat/openvswitch2.13<0:2.13.0-79.5.el8fd
0:2.13.0-79.5.el8fd
redhat/openvswitch2.11<0:2.11.3-83.el8fd
0:2.11.3-83.el8fd
redhat/ovn2.11<0:2.11.1-57.el7fd
0:2.11.1-57.el7fd
debian/openvswitch
2.10.7+ds1-0+deb10u1
2.10.7+ds1-0+deb10u4
2.15.0+ds1-2+deb11u4
3.1.0-2
3.2.2~git20231029-2

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the vulnerability ID for this openvswitch vulnerability?

    The vulnerability ID for this openvswitch vulnerability is CVE-2020-35498.

  • What is the severity of CVE-2020-35498?

    The severity of CVE-2020-35498 is high (7.5).

  • What is the affected software for CVE-2020-35498?

    The affected software for CVE-2020-35498 is openvswitch.

  • How can a malicious user exploit CVE-2020-35498?

    A malicious user can exploit CVE-2020-35498 by sending a specially crafted packet to the openvswitch, causing a denial of service.

  • Is there a remedy for CVE-2020-35498?

    Yes, there is a remedy for CVE-2020-35498. The recommended remedy is to update openvswitch to version 2.5.12 or higher.

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