[go.etcd.io/etcd/v3] etcd’s WAL `ReadAll` method vulnerable to an entry with large index causing panic

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

For more information

If you have any questions or comments about this advisory:

• Contact the etcd security committee

References

• 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/commit/7d1cf640497cbcdfb932e619b13624112c7e3865
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L6B6R43Y7M3DCHWK3L3UVGE2K6WWECMP/
• https://github.com/advisories/GHSA-m332-53r6-2w93