VulnerabilityModified
CVE-2018-21035
This makes it easier for attackers to cause a denial of service (memory consumption).
HIGH 7.5EPSS 2.34%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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).
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.34% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- qt/qt
- Source
- cve@mitre.org
References
- https://bugreports.qt.io/browse/QTBUG-70693Exploit, Third Party Advisory
- https://codereview.qt-project.org/c/qt/qtwebsockets/+/284735Patch, Third Party Advisory
- https://bugreports.qt.io/browse/QTBUG-70693Exploit, Third Party Advisory
- https://codereview.qt-project.org/c/qt/qtwebsockets/+/284735Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.