Impact

Extracting key names from a command and a list of arguments may, in some cases, trigger a heap overflow and result in reading random heap memory, heap corruption and potentially remote code execution. Several scenarios that may lead to this result:

• Authenticated users executing a specially crafted COMMAND GETKEYS or COMMAND GETKEYSANDFLAGS.
• Authenticated users who were set with ACL rules that match key names, executing a specially crafted command that refers to a variadic list of key names.

The problem exists in Redis 7.0 or newer.

Patches

The problem is fixed in Redis 7.0.12.

Credit

The problem was found by Lior Lahav.

For more information

If you have any questions or comments about this advisory:

• Open an issue in the Redis repository
• Email us at redis@redis.io