Products
kurwov
- 3.2.5
Source
security-advisories@github.com
Tags
CVE-2024-34075 details
Last Modified : May 3, 2024, 6:15 p.m.
Description
kurwov is a fast, dependency-free library for creating Markov Chains. An unsafe sanitization of dataset contents on the `MarkovData#getNext` method used in `Markov#generate` and `Markov#choose` allows a maliciously crafted string on the dataset to throw and stop the function from running properly. If a string contains a forbidden substring (i.e. `__proto__`) followed by a space character, the code will access a special property in `MarkovData#finalData` by removing the last character of the string, bypassing the dataset sanitization (as it is supposed to be already sanitized before this function is called). Any dataset can be contaminated with the substring making it unable to properly generate anything in some cases. This issue has been addressed in version 3.2.5 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
CVSS Score
| 1 | 2 | 3 | 4 | 5 | 6.2 | 7 | 8 | 9 | 10 |
|---|
Weakness
| Weakness | Name | Description |
|---|
CVSS Data
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Base Score
6.2
Exploitability Score
Impact Score
Base Severity
MEDIUM
Vector String : CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
| URL | Source |
|---|---|
| https://github.com/xiboon/kurwov/blob/0d58dfa42135ab40e830e92622857282f980ca89/src/MarkovData.ts#L38-L44 | security-advisories@github.com |
| https://github.com/xiboon/kurwov/commit/85d63e652594f121d6656177d7a3c0d823c976c9 | security-advisories@github.com |
| https://github.com/xiboon/kurwov/security/advisories/GHSA-hfrv-h3q8-9jpr | security-advisories@github.com |