CVE-2018-21035

In Qt through 5.14.1, the WebSocket implementation accepts up to 2GB for frames and 2GB for messages

High · published February 28, 2020

CVSS v3.0
8.6
EPSS
2%
Percentile
83.4
In the wild
Unconfirmed
What it is

In Qt through 5.14.1, the WebSocket implementation accepts up to 2GB for frames and 2GB for messages. Smaller limits cannot be configured. This makes it easier for attackers to cause a denial of service (memory consumption).

The record
Technical detail
CVSS v3.0
8.6 · HIGH
Vector
CVSS:3.0/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:C/UI:N
CVSS v4.0
Not supplied
EPSS
0.02339 · 83.4th percentile
Published
2020-02-28T19:17Z
EPSS history
Timeline
  • 28 FEB 19:17Z
    In Qt through 5.14.1, the WebSocket implementation accepts up to 2GB for frames and 2GB for messages
    cvelistv5