High severity · published Feb 11, 2021
CVE-2020-35498
A vulnerability was found in openvswitch
7.5
CVSS
8%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)8.0% · higher than 95% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
FE
Fedora · Fedoraproject
33 · source: NVD
OP
Openvswitch · Openvswitch
2.5.0 before 2.5.12; 2.6.0 before 2.6.10; 2.7.0 before 2.7.13; 2.8.0 before 2.8.11; 2.9.0 before 2.9.9; 2.10.0 before 2.10.7; +4 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-35498
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-35498
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1908845
Mailing List
https://lists.debian.org/debian-lts-announce/2021/02/msg00032.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJ4DXFJWMZ325ECZXPZOSK7BOEDJZHPR/
security.gentoo.org
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
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