GHSA-m332-53r6-2w93
etcd's WAL `ReadAll` method vulnerable to an entry with large index causing panic
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | go.etcd.io/etcd/v3 | < 3.3.23 | 3.3.23 |
| Go | go.etcd.io/etcd/v3 | >= 3.4.0, < 3.4.10 | 3.4.10 |
Details
As written in the advisory (Markdown source, shown as plain text).
### Vulnerability type
Data Validation
### Detail
In the ReadAll method in wal/wal.go, it is possible to have an entry index greater then the number of entries. This could cause issues when WAL entries are being read during consensus as an arbitrary etcd consensus participant could go down from a runtime panic when reading the entry.
### 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)
References
External links from the advisory. They lead to third-party sites.
- https://github.com/etcd-io/etcd/security/advisories/GHSA-m332-53r6-2w93
- https://nvd.nist.gov/vuln/detail/CVE-2020-15112
- https://github.com/etcd-io/etcd/pull/11793
- https://github.com/etcd-io/etcd/commit/7d1cf640497cbcdfb932e619b13624112c7e3865
- https://github.com/etcd-io/etcd/commit/f4b650b51dc4a53a8700700dc12e1242ac56ba07
- https://github.com/etcd-io/etcd
- https://github.com/etcd-io/etcd/blob/master/security/SECURITY_AUDIT.pdf
- https://lists.fedoraproject.org/archives/list/[email protected]/message/L6B6R43Y7M3DCHWK3L3UVGE2K6WWECMP
- https://pkg.go.dev/vuln/GO-2020-0005