Resource exhaustion in Openvswitch
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…
Vulnerability class: DoS (Denial of Service)
EPSS: 0.080 (94.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Openvswitch
- Debian Debian_linux — versions 9.0, 10.0
- Fedoraproject Fedora — versions 33
- N/a Openvswitch — versions openvswitch 2.5.12, openvswitch 2.6.10, openvswitch 2.7.13, openvswitch 2.8.11, openvswitch 2.9.9, openvswitch 2.10.7, openvswitch 2.11.6, openvswitch 2.12.3, openvswitch 2.13.3, openvswitch 2.14.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Patch, Mailing List, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Third Party Advisory)
- secalert@redhat.com (mailing-list, Mailing List, Third Party Advisory)
- secalert@redhat.com (vendor-advisory)
- secalert@redhat.com (vendor-advisory)
Frequently asked questions
- What is CVE-2020-35498?
- CVE-2020-35498 is a high-severity vulnerability in Openvswitch, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2021-02-11.
- How severe is CVE-2020-35498?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-35498 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.