Home/CVE/react/http is an event-driven, streaming HTTP client and server implementation for ReactPHP. Previous versions of React
CVE

CVE-2023-26044

react/http is an event-driven, streaming HTTP client and server implementation for ReactPHP. Previous versions of React

react/http is an event-driven, streaming HTTP client and server implementation for ReactPHP. Previous versions of ReactPHP's HTTP server component contain a potential DoS vulnerability that can cause high CPU load when processing large HTTP request bodies. This vulnerability has little to no impact on the default configuration, but can be exploited when explicitly using the RequestBodyBufferMiddleware with very large settings.

This might lead to consuming large amounts of CPU time for processing requests and significantly delay or slow down the processing of legitimate user requests. This issue has been addressed in release 1.9.0. Users are advised to upgrade.

Users unable to upgrade may keep the request body limited using RequestBodyBufferMiddleware with a sensible value which should mitigate the issue. An infrastructure or DevOps workaround could be to place a reverse proxy in front of the ReactPHP HTTP server to filter out any excessive HTTP request bodies.

MEDIUM · CVSS 5.3 EPSS 0.00433
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules7 YARA rules0
⬡

Weakness Classification

CWE-400Uncontrolled Resource Consumption
▤

Affected Products & Versions

1
reactphp http>= 0.8.0 and < 1.9.0
◈

Sigma Hunt Rules

7
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighOpenCanary - HTTP GET Request
producthighOpenCanary - HTTP POST Login Attempt
producthighRDP to HTTP or HTTPS Target Ports
producthighPotentially Suspicious Regsvr32 HTTP IP Pattern
producthighDisable Windows IIS HTTP Logging
producthighIE ZoneMap Setting Downgraded To MyComputer Zone For HTTP Protocols Via CLI
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD17 May 2023 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/reactphp/http/commit/9681f764b80c45ebfb5fe2ea7da5bd3babfcdcfdPatch
https://github.com/reactphp/http/security/advisories/GHSA-95x4-j7vc-h8mfVendor Advisory
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