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CVE-2021-37625

HIGHCVSS 7.5/10EPSS 0.94%

Last modified

CVE-2021-37625 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Skytable is an open source NoSQL database. In versions prior to 0.6.4 an incorrect check of return value of the accept function in the run-loop for a TCP socket/TLS socket/TCP+TLS multi-socket causes an early exit from the run loop that should continue infinitely unless terminated by a local user, effectively causing the whole database server to shut down. EPSS estimates a 0.94% chance of exploitation in the next 30 days.

Description

Skytable is an open source NoSQL database. In versions prior to 0.6.4 an incorrect check of return value of the accept function in the run-loop for a TCP socket/TLS socket/TCP+TLS multi-socket causes an early exit from the run loop that should continue infinitely unless terminated by a local user, effectively causing the whole database server to shut down. This has severe impact and can be used to easily cause DoS attacks without the need to use much bandwidth. The attack vectors include using an incomplete TLS connection for example by not providing the certificate for the connection and using a specially crafted TCP packet that triggers the application layer backoff algorithm.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
0.94%

56.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
SkytableSkytable0.1.0
SkytableSkytable0.2.0
SkytableSkytable0.3.0
SkytableSkytable0.3.1
SkytableSkytable0.3.2
SkytableSkytable0.4.0
SkytableSkytable0.4.1
SkytableSkytable0.4.2
SkytableSkytable0.4.3
SkytableSkytable0.4.4
SkytableSkytable0.4.5
SkytableSkytable0.5.0
SkytableSkytable0.5.1
SkytableSkytable0.5.2
SkytableSkytable0.6.0
SkytableSkytable0.6.1
SkytableSkytable0.6.2
SkytableSkytable0.6.3

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-37625?
Skytable is an open source NoSQL database. In versions prior to 0.6.4 an incorrect check of return value of the accept function in the run-loop for a TCP socket/TLS socket/TCP+TLS multi-socket causes an early exit from the run loop that should continue infinitely unless terminated by a local user, effectively causing the whole database server to shut down. This has severe impact and can be used to easily cause DoS attacks without the need to use much bandwidth. The attack vectors include using an incomplete TLS connection for example by not providing the certificate for the connection and using a specially crafted TCP packet that triggers the application layer backoff algorithm.
How severe is CVE-2021-37625?
CVE-2021-37625 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.94% probability of exploitation in the next 30 days.
How do I fix CVE-2021-37625?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-37625?

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Source: NVD / NIST