Vault DoS via proxy_protocol_behavior deny_unauthorized before 1.17.2
CVE-2024-6468 Published on July 11, 2024
Vault Vulnerable to Denial of Service When Setting a Proxy Protocol Behavior
Vault and Vault Enterprise did not properly handle requests originating from unauthorized IP addresses when the TCP listener option, proxy_protocol_behavior, was set to deny_unauthorized. When receiving a request from a source IP address that was not listed in proxy_protocol_authorized_addrs, the Vault API server would shut down and no longer respond to any HTTP requests, potentially resulting in denial of service.
While this bug also affected versions of Vault up to 1.17.1 and 1.16.5, a separate regression in those release series did not allow Vault operators to configure the deny_unauthorized option, thus not allowing the conditions for the denial of service to occur.
Fixed in Vault and Vault Enterprise 1.17.2, 1.16.6, and 1.15.12.
Weakness Type
Improper Check or Handling of Exceptional Conditions
The software does not properly anticipate or handle exceptional conditions that rarely occur during normal operation of the software.
Products Associated with CVE-2024-6468
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Affected Versions
HashiCorp Vault:- Version 1.10.0 and below 1.15.11 is affected.
- Version 1.10.0 and below 1.15.11 is affected.
- Version 1.10.0 and below 1.15.11 is affected.
- Version 1.10.0 and below 1.15.11 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.