Allocation of Resources Without Limits or Throttling Affecting antirez/redis package, versions [2.6.0-rc1,6.2.18)[7.0-rc1,7.2.8)[7.4-rc1,7.4.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published25 Apr 2025
- disclosed23 Apr 2025
- creditTiezhen Zhang, Hanyang Jin
Introduced: 23 Apr 2025
NewCVE-2025-21605 (opens in a new tab)How to fix?
Upgrade antirez/redis to version 6.2.18, 7.2.8, 7.4.3 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling when password authentication is enabled on the Redis server, but no password is provided. An attacker can exhaust system resources and cause a denial of service by sending repeated requests that lead to unlimited growth of the output buffer.
Workaround
This vulnerability can be mitigated by blocking access to prevent unauthenticated users from connecting to Redis. This can be done using network access control tools like firewalls, iptables, security groups, etc., or by enabling TLS and requiring users to authenticate using client side certificates.