HashiCorp Vault memory exhaustion via policy check (DDoS) - before 1.15.2
CVE-2023-5954 Published on November 9, 2023

Vault Requests Triggering Policy Checks May Lead To Unbounded Memory Consumption
HashiCorp Vault and Vault Enterprise inbound client requests triggering a policy check can lead to an unbounded consumption of memory. A large number of these requests may lead to denial-of-service. Fixed in Vault 1.15.2, 1.14.6, and 1.13.10.

NVD

Vulnerability Analysis

CVE-2023-5954 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
HIGH
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Weakness Type

What is a Memory Leak Vulnerability?

The software does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is often triggered by improper handling of malformed data or unexpectedly interrupted sessions. In some languages, developers are responsible for tracking memory allocation and releasing the memory. If there are no more pointers or references to the memory, then it can no longer be tracked and identified for release.

CVE-2023-5954 has been classified to as a Memory Leak vulnerability or weakness.


Products Associated with CVE-2023-5954

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HashiCorp Vault
 

Affected Versions

HashiCorp Vault: HashiCorp Vault Enterprise:

Exploit Probability

EPSS
0.52%
Percentile
66.31%

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.