Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 525
Alerts This Week
Warning Icon 1 525

Debian: DLA-3410-1 Critical: Open vSwitch Denial of Service

debian lts
Calendar Grey May 1, 2023
Dist Debian Esm H88
Important patch released for Open vSwitch addressing a denial of service vulnerability triggered by specially formed IP packets in Debian LTS.
David Marchand discovered that Open vSwitch, a multilayer, software-based, Ethernet virtual switch, was vulnerable to crafted IP packets with ip proto set to 0, potentially causing...
Topics%20covered

Topics Covered

security advisory denial of service critical debian openvswitch

Summary

Triggering the vulnerability requires an attacker to send a crafted IP
packet with protocol field set to 0 and the flow rules to contain 'set'
actions on other fields in the IP protocol header. The resulting flows will
omit required actions, and fail to mask the IP protocol field, resulting in
a large bucket which captures all IP packets.

For Debian 10 buster, this problem has been fixed in version
2.10.7+ds1-0+deb10u4.

We recommend that you upgrade your openvswitch packages.

For the detailed security status of openvswitch please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/openvswitch

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS


Severity
critical
Lowest
Low
Medium
High
Critical

Package: openvswitch
Version: 2.10.7+ds1-0+deb10u4
CVE ID: CVE-2023-1668
Debian Bug: 1034042

Topics%20covered

Topics Covered

security advisory denial of service critical debian openvswitch

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.