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Debian LTS: Security Advisory for openvswitch (DLA-2571-1)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update for the 'openvswitch' package(s) announced via the DLA-2571-1 advisory.
Insight
Insight
Several issues have been found in openvswitch, a production quality, multilayer, software-based, Ethernet virtual switch. CVE-2020-35498 Denial of service attacks, in which crafted network packets could cause the packet lookup to ignore network header fields from layers 3 and 4. The crafted network packet is an ordinary IPv4 or IPv6 packet with Ethernet padding length above 255 bytes. This causes the packet sanity check to abort parsing header fields after layer 2. CVE-2020-27827 Denial of service attacks using crafted LLDP packets. CVE-2018-17206 Buffer over-read issue during BUNDLE action decoding. CVE-2018-17204 Assertion failure due to not validating information (group type and command) in OF1.5 decoder. CVE-2017-9214 Buffer over-read that is caused by an unsigned integer underflow. CVE-2015-8011 Buffer overflow in the lldp_decode function in daemon/protocols/lldp.c in lldpd before 0.8.0 allows remote attackers to cause a denial of service (daemon crash) and possibly execute arbitrary code via vectors involving large management addresses and TLV boundaries.
Affected Software
Affected Software
'openvswitch' package(s) on Debian Linux.
Detection Method
Detection Method
Checks if a vulnerable package version is present on the target host.
Solution
Solution
For Debian 9 stretch, these problems have been fixed in version 2.6.10-0+deb9u1. This version is a new upstream point release. We recommend that you upgrade your openvswitch packages.