Vulnerability in Etcd
CVE-2020-15113
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).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.002 (12.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 12th percentile — 12.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Etcd
- Etcd-Io Etcd — versions < 3.3.23, < 3.4.10
- Fedoraproject Fedora — versions 32
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/etcd-io/etcd/security/advisories/GHSA-chh6-ppwq-jh92 (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2020-15113?
- CVE-2020-15113 is a medium-severity vulnerability in Etcd, classified under Improper Preservation of Permissions. CVSS score: 5.7/10. Published 2020-08-05.
- How severe is CVE-2020-15113?
- Medium severity. CVSS v3 base score is 5.7 out of 10.
- Is CVE-2020-15113 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.