Medium severity · published Sep 8, 2022
CVE-2019-25076
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…
5.8
CVSS
2.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)2.4% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Openvswitch · Openvswitch
2.0.0 through 2.17.2; 3.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-25076
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-25076
Third Party Advisory
https://arxiv.org/abs/2011.09107
Third Party Advisory
https://dl.acm.org/citation.cfm?doid=3359989.3365431
Exploit
https://sites.google.com/view/tuple-space-explosion
Exploit
https://www.youtube.com/watch?v=5cHpzVK0D28
Exploit
https://www.youtube.com/watch?v=DSC3m-Bww64
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