Описание
Picomatch is a glob matcher written JavaScript. Versions prior to 4.0.4, 3.0.2, and 2.3.2 are vulnerable to Regular Expression Denial of Service (ReDoS) when processing crafted extglob patterns. Certain patterns using extglob quantifiers such as +() and *(), especially when combined with overlapping alternatives or nested extglobs, are compiled into regular expressions that can exhibit catastrophic backtracking on non-matching input. Applications are impacted when they allow untrusted users to supply glob patterns that are passed to picomatch for compilation or matching. In those cases, an attacker can cause excessive CPU consumption and block the Node.js event loop, resulting in a denial of service. Applications that only use trusted, developer-controlled glob patterns are much less likely to be exposed in a security-relevant way. This issue is fixed in picomatch 4.0.4, 3.0.2 and 2.3.2. Users should upgrade to one of these versions or later, depending on their supported release line. If upgrading is not immediately possible, avoid passing untrusted glob patterns to picomatch. Possible mitigations include disabling extglob support for untrusted patterns by using noextglob: true, rejecting or sanitizing patterns containing nested extglobs or extglob quantifiers such as +() and *(), enforcing strict allowlists for accepted pattern syntax, running matching in an isolated worker or separate process with time and resource limits, and applying application-level request throttling and input validation for any endpoint that accepts glob patterns.
A flaw was found in Picomatch, a JavaScript glob matcher. This Regular Expression Denial of Service (ReDoS) vulnerability allows a remote attacker to cause excessive CPU consumption and block the Node.js event loop, leading to a denial of service. This occurs when untrusted users supply crafted extglob patterns, specifically those using quantifiers like +() and *() combined with overlapping alternatives or nested extglobs, which can trigger catastrophic backtracking in the compiled regular expressions.
Меры по смягчению последствий
To mitigate this issue, applications using Picomatch should avoid passing untrusted glob patterns for compilation or matching. Implementations can disable extglob support for untrusted patterns by setting noextglob: true in Picomatch configurations. Alternatively, reject or sanitize patterns containing nested extglobs or specific extglob quantifiers like +() and *(). Enforcing strict allowlists for accepted pattern syntax can also reduce exposure. If the application is a service, consider running the matching process in an isolated worker or separate process with time and resource limits, and apply application-level request throttling and input validation for any endpoint that accepts glob patterns. No service restart or reload is typically required for these application-level configuration changes, but verify the specific application's behavior.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Cryostat 4 | picomatch | Fix deferred | ||
| Migration Toolkit for Applications 8 | mta/mta-ui-rhel9 | Fix deferred | ||
| Node HealthCheck Operator | workload-availability/node-healthcheck-must-gather-rhel9 | Fix deferred | ||
| Node HealthCheck Operator | workload-availability/node-healthcheck-operator-bundle | Fix deferred | ||
| Node HealthCheck Operator | workload-availability/node-healthcheck-rhel9-operator | Fix deferred | ||
| Node HealthCheck Operator | workload-availability/node-remediation-console-rhel9 | Fix deferred | ||
| Red Hat 3scale API Management Platform 2 | 3scale-amp20/system | Fix deferred | ||
| Red Hat 3scale API Management Platform 2 | 3scale-amp21/system | Fix deferred | ||
| Red Hat 3scale API Management Platform 2 | 3scale-amp22/system | Fix deferred | ||
| Red Hat 3scale API Management Platform 2 | 3scale-amp24/system | Fix deferred |
Показывать по
Дополнительная информация
Статус:
EPSS
6.5 Medium
CVSS3
Связанные уязвимости
Picomatch is a glob matcher written JavaScript. Versions prior to 4.0.4, 3.0.2, and 2.3.2 are vulnerable to Regular Expression Denial of Service (ReDoS) when processing crafted extglob patterns. Certain patterns using extglob quantifiers such as `+()` and `*()`, especially when combined with overlapping alternatives or nested extglobs, are compiled into regular expressions that can exhibit catastrophic backtracking on non-matching input. Applications are impacted when they allow untrusted users to supply glob patterns that are passed to `picomatch` for compilation or matching. In those cases, an attacker can cause excessive CPU consumption and block the Node.js event loop, resulting in a denial of service. Applications that only use trusted, developer-controlled glob patterns are much less likely to be exposed in a security-relevant way. This issue is fixed in picomatch 4.0.4, 3.0.2 and 2.3.2. Users should upgrade to one of these versions or later, depending on their supported relea...
Picomatch is a glob matcher written JavaScript. Versions prior to 4.0.4, 3.0.2, and 2.3.2 are vulnerable to Regular Expression Denial of Service (ReDoS) when processing crafted extglob patterns. Certain patterns using extglob quantifiers such as `+()` and `*()`, especially when combined with overlapping alternatives or nested extglobs, are compiled into regular expressions that can exhibit catastrophic backtracking on non-matching input. Applications are impacted when they allow untrusted users to supply glob patterns that are passed to `picomatch` for compilation or matching. In those cases, an attacker can cause excessive CPU consumption and block the Node.js event loop, resulting in a denial of service. Applications that only use trusted, developer-controlled glob patterns are much less likely to be exposed in a security-relevant way. This issue is fixed in picomatch 4.0.4, 3.0.2 and 2.3.2. Users should upgrade to one of these versions or later, depending on their supported release
Picomatch has a ReDoS vulnerability via extglob quantifiers
Picomatch is a glob matcher written JavaScript. Versions prior to 4.0. ...
Picomatch has a ReDoS vulnerability via extglob quantifiers
EPSS
6.5 Medium
CVSS3