GHSA-x6gm-qqwp-76gr BIT-moodle-2022-30597 CVE-2022-30597
External Control of Assumed-Immutable Web Parameter in moodle
Medium
Packagist
- Severity
- 5.3 / 10
- Medium · CVSS 3.1
- Exploit chance (EPSS)
- 1.33%
- Chance of exploitation in the next 30 days. Higher than 71.00% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-472 External Control of Assumed-Immutable Web Parameter
- Fix
4.0.1- Upgrade moodle/moodle to this version or later
Description
A flaw was found in moodle where the description user field was not hidden when being set as a hidden user field.
Affected versions
Packagist
| Package | Vulnerable | Fixed in |
|---|---|---|
| moodle/moodle | >= 4.0, < 4.0.1 |
4.0.1 |
| moodle/moodle | >= 3.11, < 3.11.7 |
3.11.7 |
| moodle/moodle | >= 3.10, < 3.10.11 |
3.10.11 |
| moodle/moodle | >= 3.9, < 3.9.14 |
3.9.14 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
moodle/moodle Packagist → 4.0.1
- composer
composer require moodle/moodle:^4.0.1
Severity breakdown
CVSS 3.1 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Weakness
CWE-472: External Control of Assumed-Immutable Web Parameter
The web application does not sufficiently verify inputs that are assumed to be immutable but are actually externally controllable, such as hidden form fields.
How to prevent it
- Implementation: Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does. When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue." Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
- Implementation: Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.
References
Advisories
Packages
Other links
- github.com/moodle/moodle/commit/670268900cca1d55a718d708ae91bda826f8b9a3
- bugzilla.redhat.com/show_bug.cgi
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OGF35…
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PIMSI…
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QCTWS…
- moodle.org/mod/forum/discuss.php
- git.moodle.org/gw
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-cg8j-5cr2-568q Moodle TeX formula editor is vulnerable to DoS through lack of execution time limits | Medium | Also affects moodle/moodle |
| GHSA-ggxq-2mg9-8966 Moodle has a Remote Code Execution risk via file restore | High | Also affects moodle/moodle |
| GHSA-8jrv-wx83-w3xj Moodle Inserts Sensitive Information Into Sent Data | Medium | Also affects moodle/moodle |
| GHSA-hcm6-q6pc-xfhm Moodle has an authorization logic flaw | Critical | Also affects moodle/moodle |
| GHSA-vwhw-vp9v-q9c9 Moodle vulnerable to Cross-site Scripting | Medium | Also affects moodle/moodle |
| GHSA-5cx4-w4fh-fr57 Moodle Affected by Improper Restriction of Excessive Authentication Attempts | High | Also affects moodle/moodle |
| GHSA-qv78-6gpp-hm68 Moodle Open Redirect vulnerability | Medium | Also affects moodle/moodle |
| GHSA-qfh6-h7j6-fvjv Moodle formula injection vulnerability | High | Also affects moodle/moodle |
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