CVE-2020-13849
The MQTT protocol 3.1.1 requires a server to set a timeout value of 1.5 times the Keep-Alive value specified by a client, which allows remote attackers to cause a denial of service (loss of the ability to establish new connections), as demonstrated by…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.00%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The MQTT protocol 3.1.1 requires a server to set a timeout value of 1.5 times the Keep-Alive value specified by a client, which allows remote attackers to cause a denial of service (loss of the ability to establish new connections), as demonstrated by SlowITe.
- 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
- 2.00% probability · 80th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- mqtt/mqtt
- Source
- cve@mitre.org
References
- https://doi.org/10.3390/s20102932Technical Description, Third Party Advisory
- https://www.mdpi.com/1424-8220/20/10/2932Technical Description, Third Party Advisory
- https://doi.org/10.3390/s20102932Technical Description, Third Party Advisory
- https://www.mdpi.com/1424-8220/20/10/2932Technical Description, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.