7.5
HIGH
CVE-2023-26103
Deno ReDoS Vulnerability in WebSocket Upgrade Function
Description

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.

INFO

Published Date :

Feb. 25, 2023, 5:15 a.m.

Last Modified :

Nov. 7, 2023, 4:09 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2023-26103 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2023-26103 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Deno deno
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-26103.

URL Resource
https://github.com/denoland/deno/blob/2b247be517d789a37e532849e2e40b724af0918f/ext/http/01_http.js%23L395-L409 Broken Link
https://github.com/denoland/deno/commit/cf06a7c7e672880e1b38598fe445e2c50b4a9d06 Patch
https://github.com/denoland/deno/pull/17722 Patch
https://github.com/denoland/deno/releases/tag/v1.31.0 Release Notes
https://security.snyk.io/vuln/SNYK-RUST-DENO-3315970 Exploit Technical Description Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

This is a list of artifacts from the GitHub Advisory Database where the corresponding JSON files are missing CVE identifiers, despite the fact that these artifacts are listed in the NVD (National Vulnerability Database). I cross-referenced the data, retrieved the missing CVEs, and compiled everything into a list.

Updated: 1 week, 1 day ago
0 stars 0 fork 0 watcher
Born at : Oct. 1, 2024, 9:03 p.m. This repo has been linked 99 different CVEs too.

My personal repository

Updated: 1 month, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : Oct. 6, 2023, 4:45 p.m. This repo has been linked 78 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-26103 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-26103 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Changed Description 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. 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.
    Added CWE Snyk CWE-1333
  • Initial Analysis by [email protected]

    Mar. 07, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://github.com/denoland/deno/blob/2b247be517d789a37e532849e2e40b724af0918f/ext/http/01_http.js%23L395-L409 No Types Assigned https://github.com/denoland/deno/blob/2b247be517d789a37e532849e2e40b724af0918f/ext/http/01_http.js%23L395-L409 Broken Link
    Changed Reference Type https://github.com/denoland/deno/commit/cf06a7c7e672880e1b38598fe445e2c50b4a9d06 No Types Assigned https://github.com/denoland/deno/commit/cf06a7c7e672880e1b38598fe445e2c50b4a9d06 Patch
    Changed Reference Type https://github.com/denoland/deno/pull/17722 No Types Assigned https://github.com/denoland/deno/pull/17722 Patch
    Changed Reference Type https://github.com/denoland/deno/releases/tag/v1.31.0 No Types Assigned https://github.com/denoland/deno/releases/tag/v1.31.0 Release Notes
    Changed Reference Type https://security.snyk.io/vuln/SNYK-RUST-DENO-3315970 No Types Assigned https://security.snyk.io/vuln/SNYK-RUST-DENO-3315970 Exploit, Technical Description, Third Party Advisory
    Added CWE NIST CWE-1333
    Added CPE Configuration OR *cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:* versions up to (excluding) 1.31.0
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-26103 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-26103 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.15 }} -0.00%

score

0.51603

percentile

CVSS31 - Vulnerability Scoring System
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