CVE-2023-5632CWE-834

Unconditionally adding an event to the epoll causes excessive CPU consumption

High · published October 18, 2023

CVSS v3.1
7.5
EPSS
1%
Percentile
56.2
In the wild
Unconfirmed
What it is

In Eclipse Mosquito before and including 2.0.5, establishing a connection to the mosquitto server without sending data causes the EPOLLOUT event to be added, which results excessive CPU consumption. This could be used by a malicious actor to perform denial of service type attack. This issue is fixed in 2.0.6

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00803 · 56.2th percentile
Weakness
CWE-834 · Excessive Iteration
Published
2023-10-18T08:34Z
EPSS history
Timeline
  • 18 OCT 08:34Z
    Unconditionally adding an event to the epoll causes excessive CPU consumption
    cvelistv5