CVE-2019-25076

Public Exploit

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.

5.8

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.23%

Third-Party Advisory arxiv.org Third-Party Advisory acm.org Third-Party Advisory google.com Third-Party Advisory youtube.com Third-Party Advisory youtube.com

Affected: n/a n/a

References

Link	Tags
https://sites.google.com/view/tuple-space-explosion	third party advisory exploit
https://dl.acm.org/citation.cfm?doid=3359989.3365431	third party advisory
https://arxiv.org/abs/2011.09107	third party advisory
https://www.youtube.com/watch?v=DSC3m-Bww64	third party advisory exploit
https://www.youtube.com/watch?v=5cHpzVK0D28	third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2019-25076?: CVE-2019-25076 has been scored as a medium severity vulnerability.
How to fix CVE-2019-25076?: To fix CVE-2019-25076, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-25076 being actively exploited in the wild?: It is possible that CVE-2019-25076 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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