Vulnerability · Published May 17, 2023 · Assigned by GitHub_M

CVE-2023-31135Dgraph Audit Log Encryption nonce reuse

Low 3.3

In plain English

A low-severity security flaw in dgraph from dgraph-io. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.3Low

Exploit odds (30 days)0.2%top 95.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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`.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/dgraph-io/dgraph	23.0.0	GHSA-92wq-q9pq-gw47

Affected products (as reported)

Vendor	Product	Versions
dgraph-io	dgraph	< 23.0.0

Weakness: CWE-326 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

https://github.com/dgraph-io/dgraph/security/advisories/GHSA-92wq-q9pq-gw47 x_refsource_CONFIRM
https://github.com/dgraph-io/dgraph/pull/8323 x_refsource_MISC
https://en.wikipedia.org/wiki/Cryptographic_nonce x_refsource_MISC