7.5
HIGH
CVE-2023-35391
Microsoft ASP.NET Core SignalR Cross-Site Scripting (XSS) Disclosure
Description

ASP.NET Core SignalR and Visual Studio Information Disclosure Vulnerability

INFO

Published Date :

Aug. 8, 2023, 7:15 p.m.

Last Modified :

Nov. 6, 2023, 11:15 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2023-35391 has a 1 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-2023-35391 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 Microsoft asp.net_core
2 Microsoft visual_studio
3 Microsoft .net
4 Microsoft visual_studio_2022
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-2023-35391.

URL Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35391 Patch Vendor 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).

Build a CVE library with aggregated CISA, EPSS and CVSS data

cisa cisa-kev cve cve-search cves cvss cvss2 cvss3 cvssv2 cvssv3 epss vulnerabilities vulnerability-assessment vulnerability-management no-dependencies nodependence

JavaScript

Updated: 1 year ago
27 stars 3 fork 3 watcher
Born at : Aug. 31, 2023, 1:31 p.m. This repo has been linked 9 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-2023-35391 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-35391 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. 06, 2023

    Action Type Old Value New Value
    Removed CVSS V3.1 Microsoft Corporation AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
    Added CVSS V3.1 Microsoft Corporation AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    Removed CVSS V3.1 Reason AV-Lack of information
    Removed CVSS V3.1 Reason I-No integrity impacts identified
    Removed CVSS V3.1 Reason PR-No privileges needed
  • Reanalysis by [email protected]

    Aug. 24, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* versions from (including) 6.0.0 up to (including) 6.0.21 *cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* versions from (including) 7.0.0 up to (including) 7.0.10 *cpe:2.3:a:microsoft:asp.net_core:2.1:*:*:*:*:*:*:* *cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* versions from (including) 17.2.0 up to (excluding) 17.2.18 *cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* versions from (including) 17.4.0 up to (excluding) 17.4.10 *cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* versions from (including) 17.6.0 up to (excluding) 17.6.6 OR *cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* versions from (including) 6.0.0 up to (excluding) 6.0.21 *cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* versions from (including) 7.0.0 up to (excluding) 7.0.10 *cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:* versions from (including) 2.1 up to (excluding) 2.1.40 *cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* versions from (including) 17.2.0 up to (excluding) 17.2.18 *cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* versions from (including) 17.4.0 up to (excluding) 17.4.10 *cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* versions from (including) 17.6.0 up to (excluding) 17.6.6
  • Initial Analysis by [email protected]

    Aug. 11, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35391 No Types Assigned https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35391 Patch, Vendor Advisory
    Added CWE NIST NVD-CWE-noinfo
    Added CPE Configuration OR *cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* versions from (including) 6.0.0 up to (including) 6.0.21 *cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* versions from (including) 7.0.0 up to (including) 7.0.10 *cpe:2.3:a:microsoft:asp.net_core:2.1:*:*:*:*:*:*:* *cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* versions from (including) 17.2.0 up to (excluding) 17.2.18 *cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* versions from (including) 17.4.0 up to (excluding) 17.4.10 *cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* versions from (including) 17.6.0 up to (excluding) 17.6.6
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-2023-35391 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-2023-35391 weaknesses.

Exploit Prediction

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

0.27 }} 0.11%

score

0.68055

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability