uap-core in an open-source npm package which contains the core of BrowserScope's original user agent string parser. In uap-core before version 0.11.0, some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings. This is fixed in version 0.11.0. Downstream packages such as uap-python, uap-ruby etc which depend upon uap-core follow different version schemes.

Threat-Mapped Scoring

Score: 1.9

Priority: P3 - Important (Medium)

• S9 – Sabotage of System/App
• S10 – Denial of Service (+0.1 bonus)

EPSS

Score: 0.01481
Percentile: 0.80135

CVSS Scoring

Mapped CWE(s)

• CWE-1333 : Inefficient Regular Expression Complexity
• CWE-400 : Uncontrolled Resource Consumption

All CAPEC(s)

CAPEC(s) with Mapped TTPs

Mapped ATT&CK TTPs

• T1499 : Endpoint Denial of Service
  Kill Chain: impact

Malware

APTs Threat Group Associations

Campaigns

Affected Products

• cpe:2.3:a:uap-core_project:uap-core:*:*:*:*:*:node.js:*:*

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