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CVE-2023-34104 (High) detected in fast-xml-parser-3.15.0.tgz #184
fast-xml-parser is an open source, pure javascript xml parser. fast-xml-parser allows special characters in entity names, which are not escaped or sanitized. Since the entity name is used for creating a regex for searching and replacing entities in the XML body, an attacker can abuse it for denial of service (DoS) attacks. By crafting an entity name that results in an intentionally bad performing regex and utilizing it in the entity replacement step of the parser, this can cause the parser to stall for an indefinite amount of time. This problem has been resolved in v4.2.4. Users are advised to upgrade. Users unable to upgrade should avoid using DOCTYPE parsing by setting the `processEntities: false` option.
CVE-2023-34104 - High Severity Vulnerability
Validate XML or Parse XML to JS/JSON very fast without C/C++ based libraries
Library home page: https://registry.npmjs.org/fast-xml-parser/-/fast-xml-parser-3.15.0.tgz
Path to dependency file: /eng/mgmt/package.json
Path to vulnerable library: /eng/mgmt/node_modules/fast-xml-parser/package.json
Dependency Hierarchy: - :x: **fast-xml-parser-3.15.0.tgz** (Vulnerable Library)
Found in base branch: master
fast-xml-parser is an open source, pure javascript xml parser. fast-xml-parser allows special characters in entity names, which are not escaped or sanitized. Since the entity name is used for creating a regex for searching and replacing entities in the XML body, an attacker can abuse it for denial of service (DoS) attacks. By crafting an entity name that results in an intentionally bad performing regex and utilizing it in the entity replacement step of the parser, this can cause the parser to stall for an indefinite amount of time. This problem has been resolved in v4.2.4. Users are advised to upgrade. Users unable to upgrade should avoid using DOCTYPE parsing by setting the `processEntities: false` option.
Publish Date: 2023-06-06
URL: CVE-2023-34104
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: None - Availability Impact: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-6w63-h3fj-q4vw
Release Date: 2023-06-06
Fix Resolution: 4.2.4
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