CVE-2020-15113

Description

In etcd before versions 3.3.23 and 3.4.10, certain directory paths are created (etcd data directory and the directory path when provided to automatically generate self-signed certificates for TLS connections with clients) with restricted access permissions (700) by using the os.MkdirAll. This function does not perform any permission checks when a given directory path exists already. A possible workaround is to ensure the directories have the desired permission (700).

How to fix CVE-2020-15113

To remediate CVE-2020-15113, upgrade the affected package to a fixed version below.

• —upgrade to 3.3.23 or later
• —upgrade to 3.3.25+dfsg-5 or later
• —upgrade to 3.4.10 or later

Is CVE-2020-15113 being exploited?

Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.

Affected packages (3)

• from 0, < 3.3.23, >= 3.4.0, < 3.4.10
• from 0, < 3.3.25+dfsg-5
• >= 3.4.0-rc.0, < 3.4.10

CVSS scores

References (7)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2020-15113
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2020-15113
• WEBgithub.com/etcd-io/etcd/commit/6be5c54c94298ae6746a574d2af8227d0c9a998b
• WEBgithub.com/etcd-io/etcd/commit/e5424fc474b274c9e6b5205165015bc2035745f2