Debian: DLA-2571-1 Moderate: Openvswitch Denial Of Service Attacks

debian lts

February 19, 2021

Several issues have been found in openvswitch, a production quality, multilayer, software-based, Ethernet virtual switch

Topics Covered

security advisory denial of service buffer overflow software update Debian openvswitch deny access

Summary

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