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CVE-2023-26103

Good to know:

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Date: February 25, 2023

Versions of the package deno before 1.31.0 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the upgradeWebSocket function, which contains regexes in the form of /s*,s*/, used for splitting the Connection/Upgrade header. A specially crafted Connection/Upgrade header can be used to significantly slow down a web socket server.

Language: RUST

Severity Score

Related Resources (9)

https://github.com/denoland/deno/commit/cf06a7c7e672880e1b38598fe445e2c50b4a9d06
https://github.com/denoland/deno/blob/2b247be517d789a37e532849e2e40b724af0918f/ext/http/01_http.js#L395-L409
https://github.com/denoland/deno/pull/17722
https://github.com/denoland/deno
https://github.com/denoland/deno/security/advisories/GHSA-jc97-h3h9-7xh6
https://nvd.nist.gov/vuln/detail/CVE-2023-26103
https://github.com/denoland/deno/blob/2b247be517d789a37e532849e2e40b724af0918f/ext/http/01_http.js%23L395-L409
https://github.com/denoland/deno/releases/tag/v1.31.0
https://www.mend.io/vulnerability-database/CVE-2023-26103

Severity Score

Weakness Type (CWE)

Inefficient Regular Expression Complexity

CWE-1333

Top Fix

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Upgrade Version

Upgrade to version deno - 1.31.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

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