Moodle uses the same key for QR login and auto-login

Description

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.

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
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Source code
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Published (advisory)
2024-06-18 21:30:36 UTC
Updated
2024-12-04 22:18:07 UTC
GitHub reviewed
2024-06-18 22:45:45 UTC
NVD published
2024-06-18

EPSS Score

Score Percentile
0.19% 40.47%

CVSS Scores

Base score Version Severity Vector
6.5 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
6.9 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:L)
Exploitation conditions are straightforward and stable.
Attack requirements (AT:N)
No additional preconditions are required beyond normal reachability.
Privileges required (PR:N)
No privileges are required.
User interaction (UI:N)
No user interaction is required.
Vulnerable system confidentiality impact (VC:L)
Limited confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:L)
Limited integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:N)
No availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N)
No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:N)
No availability impact on subsequent systems.

Identifiers

CWEs

CWE id Name
CWE-324 Use of a Key Past its Expiration Date
CWE-326 Inadequate Encryption Strength

Affected packages (4)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
composer moodle/moodle >= 4.4.0-beta, < 4.4.1 4.4.1
composer moodle/moodle >= 4.3.0-beta, < 4.3.5 4.3.5
composer moodle/moodle >= 4.2.0-beta, < 4.2.8 4.2.8
composer moodle/moodle < 4.1.11 4.1.11

References

cvelogic Threat Intelligence