Vulnerability in Openvswitch
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 packet data that requires excessive evaluation time within the packet classification algorithm for the MegaFlow cache, aka a Tuple Space Explosion (TSE) attack.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.023 (82.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.023 · change: +0.004
Affected products
- Openvswitch — versions 3.0.0
Public proof-of-concept exploits
References
- sites.google.com/view/tuple-space-explosion (Exploit, Third Party Advisory)
- dl.acm.org/citation.cfm (Third Party Advisory)
- arxiv.org/abs/2011.09107 (Third Party Advisory)
- www.youtube.com/watch (Exploit, Third Party Advisory)
- www.youtube.com/watch (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-25076?
- CVE-2019-25076 is a medium-severity vulnerability in Openvswitch. CVSS score: 5.8/10. Published 2022-09-08.
- How severe is CVE-2019-25076?
- Medium severity. CVSS v3 base score is 5.8 out of 10.
- Is CVE-2019-25076 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.