CVE-2020-15106

Improper Input Validation in etcd

Description

In etcd before versions 3.3.23 and 3.4.10, a large slice causes panic in decodeRecord method. The size of a record is stored in the length field of a WAL file and no additional validation is done on this data. Therefore, it is possible to forge an extremely large frame size that can unintentionally panic at the expense of any RAFT participant trying to decode the WAL.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.10%
Vendor Advisory fedoraproject.org
Affected: etcd-io etcd
Published at:
Updated at:

References

Link Tags
https://github.com/etcd-io/etcd/security/advisories/GHSA-p4g4-wgrh-qrg2 third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6B6R43Y7M3DCHWK3L3UVGE2K6WWECMP/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-15106?
CVE-2020-15106 has been scored as a medium severity vulnerability.
How to fix CVE-2020-15106?
To fix CVE-2020-15106, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-15106 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-15106 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-15106?
CVE-2020-15106 affects etcd-io etcd.
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