Dgraph Audit Log Encryption nonce reuse

Dgraph is an open source distributed GraphQL database. Existing Dgraph audit logs are vulnerable to brute force attacks due to nonce collisions. The first 12 bytes come from a baseIv which is initialized when an audit log is created. The last 4 bytes come from the length of the log line being encrypted. This is problematic because two log lines will often have the same length, so due to these collisions we are reusing the same nonce many times. All audit logs generated by versions of Dgraph <v23.0.0 are affected. Attackers must have access to the system the logs are stored on. Dgraph users should upgrade to v23.0.0. Users unable to upgrade should store existing audit logs in a secure location and for extra security, encrypt using an external tool like `gpg`.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

不充分的加密强度

Dgraph 加密问题漏洞

Dgraph是Dgraph开源的一个具有图形后端的水平可扩展分布式 GraphQL 数据库。 Dgraph 23.0.0 之前版本存在加密问题漏洞，该漏洞源于nounce冲突，攻击者利用该漏洞可以对日志进行暴力攻击。

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