Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openvswitch | Openvswitch | >= 2.5.0, < 2.5.12 |
| Debian | Debian Linux | 9.0 |
| Fedoraproject | Fedora | 33 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1908845Issue TrackingPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00032.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202311-16
- https://www.debian.org/security/2021/dsa-4852Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/02/10/4Mailing ListPatchThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1908845Issue TrackingPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00032.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202311-16
- https://www.debian.org/security/2021/dsa-4852Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/02/10/4Mailing ListPatchThird Party Advisory
FAQ
What is CVE-2020-35498?
CVE-2020-35498 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...
How severe is CVE-2020-35498?
CVE-2020-35498 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-35498?
Check the references section above for vendor advisories and patch information. Affected products include: Openvswitch Openvswitch, Debian Debian Linux, Fedoraproject Fedora.