CVE-2019-25076

2022-09-0823:15:10

Debian Security Bug Tracker

security-tracker.debian.org

open vswitch

tss algorithm

denial of service

crafted packet data

megaflow cache

tuple space explosion

CVSS3

5.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

EPSS

0.003

Percentile

69.0%

JSON

The TSS (Tuple Space Search) algorithm in Open vSwitch 2.x through 2.17.2 and 3.0.0 allows remote attackers to cause a denial of service (delays of legitimate traffic) via crafted packet data that requires excessive evaluation time within the packet classification algorithm for the MegaFlow cache, aka a Tuple Space Explosion (TSE) attack.

OSVersionArchitecturePackageVersionFilename
Debian12allopenvswitch<= 3.1.0-2+deb12u1openvswitch_3.1.0-2+deb12u1_all.deb
Debian11allopenvswitch<= 2.15.0+ds1-2+deb11u5openvswitch_2.15.0+ds1-2+deb11u5_all.deb
Debian999allopenvswitch<= 3.4.0-1openvswitch_3.4.0-1_all.deb
Debian13allopenvswitch<= 3.4.0-1openvswitch_3.4.0-1_all.deb

OS	Version	Architecture	Package	Version	Filename
Debian	12	all	openvswitch	<= 3.1.0-2+deb12u1	openvswitch_3.1.0-2+deb12u1_all.deb
Debian	11	all	openvswitch	<= 2.15.0+ds1-2+deb11u5	openvswitch_2.15.0+ds1-2+deb11u5_all.deb
Debian	999	all	openvswitch	<= 3.4.0-1	openvswitch_3.4.0-1_all.deb
Debian	13	all	openvswitch	<= 3.4.0-1	openvswitch_3.4.0-1_all.deb