Vulnerability in Skytable
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.009 (60.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Skytable — versions 0.4.2, 0.3.1, < 0.6.4
Weakness classification (CWE)
References
- github.com/skytable/skytable/security/advisories/GHSA-q27r-h25m-hcc7 (Third Party Advisory)
- github.com/skytable/skytable/commit/bb19d024ea1e5e0c9a3d75a9ee58ff03c70c7e5d (Patch, Third Party Advisory)
- security.skytable.io/ve/s/00002.html (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-37625?
- CVE-2021-37625 is a high-severity vulnerability in Skytable, classified under CWE-252. CVSS score: 7.5/10. Published 2021-08-05.
- How severe is CVE-2021-37625?
- High severity. CVSS v3 base score is 7.5 out of 10.