#VU41647 Improper Preservation of Permissions in etcd - CVE-2020-15113

Vulnerability identifier: #VU41647

Vulnerability risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-15113

CWE-ID: CWE-281

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
etcd
Server applications / Database software

Vendor: CoreOS

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to software improperly sets permissions to certain directory paths in case they were previously created (etcd data directory and the directory path when provided to automatically generate self-signed certificates for TLS connections with clients). A local user can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

etcd: 3.3.0 - 3.4.9

---

External links
https://github.com/etcd-io/etcd/security/advisories/GHSA-chh6-ppwq-jh92

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.