Key reuse across QR & auto-login flows (CVE-2024-38277)
CVE-2024-38277 Published on June 18, 2024
moodle: QR login key and auto-login key for the Moodle mobile app should be generated as separate keys
A unique key should be generated for a user's QR login key and their auto-login key, so the same key cannot be used interchangeably between the two.
Vulnerability Analysis
CVE-2024-38277 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Types
Use of a Key Past its Expiration Date
The product uses a cryptographic key or password past its expiration date, which diminishes its safety significantly by increasing the timing window for cracking attacks against that key. While the expiration of keys does not necessarily ensure that they are compromised, it is a significant concern that keys which remain in use for prolonged periods of time have a decreasing probability of integrity. For this reason, it is important to replace keys within a period of time proportional to their strength.
Inadequate Encryption Strength
The software stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required. A weak encryption scheme can be subjected to brute force attacks that have a reasonable chance of succeeding using current attack methods and resources.
Products Associated with CVE-2024-38277
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Affected Versions
Moodle:- Version 4.4 is affected.
- Version 4.3, <= 4.3.4 is affected.
- Version 4.2, <= 4.2.7 is affected.
- Version 4.1, <= 4.1.10 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.