CVE-2020-15113
Improper Preservation of Permissions in etcd
Impact
### Vulnerability type Access Controls ### Detail etcd creates certain directory paths (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. ### Specific Go Package Affected github.com/etcd-io/etcd/pkg/fileutil ### Workarounds Make sure these directories have the desired permit (700). ### References Find out more on this vulnerability in the [security audit report](https://github.com/etcd-io/etcd/blob/master/security/SECURITY_AUDIT.pdf) ### For more information If you have any questions or comments about this advisory: * Contact the [etcd security committee](https://github.com/etcd-io/etcd/blob/master/security/security-release-process.md#product-security-committee-psc)
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/etcd-io/etcd | >= 3.4.0-rc.0, < 3.4.10 | 3.4.10 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Etcd | Etcd | before 3.3.23 from 3.4.0 before 3.4.10 |
| Fedoraproject | Fedora | Version 32 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/etcd-io/etcd/security/advisories/GHSA-chh6-ppwq-jh92
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6B6R43Y7M3DCHWK3L3UVGE2K6WWECMP/
- https://github.com/advisories/GHSA-chh6-ppwq-jh92
- https://nvd.nist.gov/vuln/detail/CVE-2020-15113
- https://github.com/etcd-io/etcd/commit/6be5c54c94298ae6746a574d2af8227d0c9a998b
- https://github.com/etcd-io/etcd/commit/e5424fc474b274c9e6b5205165015bc2035745f2
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L6B6R43Y7M3DCHWK3L3UVGE2K6WWECMP/