Known Exploited Vulnerability
5.3
MEDIUM
CVE-2023-41763
Microsoft Skype for Business Privilege Escalation - [Actively Exploited]
Description

Skype for Business Elevation of Privilege Vulnerability

INFO

Published Date :

Oct. 10, 2023, 6:15 p.m.

Last Modified :

Nov. 29, 2024, 2:36 p.m.

Remotely Exploitable :

Yes !

Impact Score :

1.4

Exploitability Score :

3.9
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

Microsoft Skype for Business contains an unspecified vulnerability that allows for privilege escalation.

Required Action :

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Notes :

https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-41763; https://nvd.nist.gov/vuln/detail/CVE-2023-41763

Public PoC/Exploit Available at Github

CVE-2023-41763 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-2023-41763 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 skype_for_business_server
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-2023-41763.

URL Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-41763 Patch Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-41763 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).

Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.

cisa-kev vulnerability 0day cisa exploits

Updated: 2 weeks, 2 days ago
548 stars 35 fork 35 watcher
Born at : April 19, 2022, 8:58 a.m. This repo has been linked 1228 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-2023-41763 vulnerability anywhere in the article.

  • Help Net Security
Microsoft enforces defenses preventing NTLM relay attacks

Since making Kerberos the default Windows authentication protocol in 2000, Microsoft has been working on eventually retiring NTLM, its less secure and obsolete counterpart. Until NTLM gets disabled by ... Read more

Published Date: Dec 11, 2024 (1 week, 4 days ago)

The following table lists the changes that have been made to the CVE-2023-41763 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.

  • Modified Analysis by [email protected]

    Nov. 29, 2024

    Action Type Old Value New Value
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-41763
  • Modified Analysis by [email protected]

    Aug. 14, 2024

    Action Type Old Value New Value
    Removed CWE NIST NVD-CWE-noinfo
    Added CWE NIST CWE-918
  • CVE Modified by [email protected]

    May. 29, 2024

    Action Type Old Value New Value
    Added CWE Microsoft Corporation CWE-918
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Oct. 12, 2023

    Action Type Old Value New Value
    Changed Reference Type https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-41763 No Types Assigned https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-41763 Patch, Vendor Advisory
    Added CWE NIST NVD-CWE-noinfo
    Added CPE Configuration OR *cpe:2.3:a:microsoft:skype_for_business_server:2015:cumulative_update_13:*:*:*:*:*:* *cpe:2.3:a:microsoft:skype_for_business_server:2019:cumulative_update_7:*:*:*:*:*:*
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-2023-41763 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-2023-41763 weaknesses.

Exploit Prediction

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

2.35 }} -1.69%

score

0.89479

percentile

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