Vulnerability Details : CVE-2020-35498
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.
Vulnerability category: Denial of service
Products affected by CVE-2020-35498
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-35498
0.36%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 71 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-35498
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.8
|
HIGH | AV:N/AC:L/Au:N/C:N/I:N/A:C |
10.0
|
6.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-35498
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by: secalert@redhat.com (Primary)
References for CVE-2020-35498
-
https://www.debian.org/security/2021/dsa-4852
Debian -- Security Information -- DSA-4852-1 openvswitchThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/02/msg00032.html
[SECURITY] [DLA 2571-1] openvswitch security updateMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJ4DXFJWMZ325ECZXPZOSK7BOEDJZHPR/
[SECURITY] Fedora 33 Update: dpdk-20.11-1.fc33 - package-announce - Fedora Mailing-Lists
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJ4DXFJWMZ325ECZXPZOSK7BOEDJZHPR/
[SECURITY] Fedora 33 Update: dpdk-20.11-1.fc33 - package-announce - Fedora Mailing-ListsThird Party Advisory
-
https://www.openwall.com/lists/oss-security/2021/02/10/4
oss-security - CVE-2020-35498: Open vSwitch: Packet parsing vulnerabilityMailing List;Patch;Third Party Advisory
-
https://security.gentoo.org/glsa/202311-16
Open vSwitch: Multiple Vulnerabilities (GLSA 202311-16) — Gentoo security
-
https://bugzilla.redhat.com/show_bug.cgi?id=1908845
1908845 – (CVE-2020-35498) CVE-2020-35498 openvswitch: limitation in the OVS packet parsing in userspace leads to DoSIssue Tracking;Patch;Third Party Advisory
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