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CVE-2023-41763— Skype for Business Elevation of Privilege Vulnerability

Quick assessment

Affected
Microsoft Skype for Business Server 2015 CU13
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Skype for Business Server是美国微软（Microsoft）公司的一套安全统一的通信平台，它提供即时消息 (IM)、音频和视频通话、联机会议、联机状态信息和共享功能。 Microsoft Skype for Business存在安全漏洞。攻击者利用该漏洞可以提升权限。以下产品和版本受到影响：Skype for Business Server 2015 CU13,Skype for Business Server 2019 CU7。

CVSS 5.3 · Medium KEV EPSS 90.55% · P100

Public Exploits 1

Nuclei · 1 CVE-2023-41763.yaml [template]

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2023-41763

Vulnerability Information
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Vulnerability Title
Skype for Business Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Skype for Business Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Skype for Business 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Skype for Business Server是美国微软（Microsoft）公司的一套安全统一的通信平台，它提供即时消息 (IM)、音频和视频通话、联机会议、联机状态信息和共享功能。 Microsoft Skype for Business存在安全漏洞。攻击者利用该漏洞可以提升权限。以下产品和版本受到影响：Skype for Business Server 2015 CU13,Skype for Business Server 2019 CU7。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Skype for Business Server 2015 CU13 9319.0 ~ 6.0.9319.869 -
Microsoft Skype for Business Server 2019 CU7 2046.0 ~ 7.0.246.530 -

II. Public POCs for CVE-2023-41763

# POC Description Source Link Shenlong Link
1 Skype Pre-Auth Server-side Request Forgery (SSRF) vulnerability https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-41763.yaml POC Details
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III. Intelligence Information for CVE-2023-41763

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Vendor Advisories for CVE-2023-41763 (1)

Same Patch Batch · Microsoft · 2023-10-10 · 103 CVEs total

CVE-2023-35349 9.8 CRITICAL Microsoft Message Queuing (MSMQ) Remote Code Execution Vulnerability
CVE-2023-36434 9.8 CRITICAL Windows IIS Server Elevation of Privilege Vulnerability
CVE-2023-36415 8.8 HIGH Azure Identity SDK Remote Code Execution Vulnerability
CVE-2023-36414 8.8 HIGH Azure Identity SDK Remote Code Execution Vulnerability
CVE-2023-36577 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2023-36419 8.8 HIGH Azure HDInsight Apache Oozie Workflow Scheduler XXE Elevation of Privilege Vulnerability
CVE-2023-36569 8.4 HIGH Microsoft Office Elevation of Privilege Vulnerability
CVE-2023-38166 8.1 HIGH Layer 2 Tunneling Protocol Remote Code Execution Vulnerability
CVE-2023-41774 8.1 HIGH Layer 2 Tunneling Protocol Remote Code Execution Vulnerability
CVE-2023-41773 8.1 HIGH Layer 2 Tunneling Protocol Remote Code Execution Vulnerability
CVE-2023-41771 8.1 HIGH Layer 2 Tunneling Protocol Remote Code Execution Vulnerability
CVE-2023-41770 8.1 HIGH Layer 2 Tunneling Protocol Remote Code Execution Vulnerability
CVE-2023-41769 8.1 HIGH Layer 2 Tunneling Protocol Remote Code Execution Vulnerability
CVE-2023-41767 8.1 HIGH Layer 2 Tunneling Protocol Remote Code Execution Vulnerability
CVE-2023-41768 8.1 HIGH Layer 2 Tunneling Protocol Remote Code Execution Vulnerability
CVE-2023-41765 8.1 HIGH Layer 2 Tunneling Protocol Remote Code Execution Vulnerability
CVE-2023-36778 8.0 HIGH Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2023-36726 7.8 HIGH Windows Internet Key Exchange (IKE) Extension Elevation of Privilege Vulnerability
CVE-2023-36701 7.8 HIGH Microsoft Resilient File System (ReFS) Elevation of Privilege Vulnerability
CVE-2023-36730 7.8 HIGH Microsoft ODBC Driver for SQL Server Remote Code Execution Vulnerability

Showing top 20 of 103 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Skype for Business Server 2015 CU13
Same vendor: Microsoft
Same weakness: CWE-918

V. Comments for CVE-2023-41763

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