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zdiDiscovered by: Hector Peralta (@hperalta89) and Nicolรกs ArmuaZDI-24-293
HistoryMar 13, 2024 - 12:00 a.m.

Microsoft Skype Protection Mechanism Failure Remote Code Execution Vulnerability

2024-03-1300:00:00
Discovered by: Hector Peralta (@hperalta89) and Nicolรกs Armua
www.zerodayinitiative.com
12
microsoft
skype
remote code execution
vulnerability
today tab
context isolation

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

7.2 High

AI Score

Confidence

High

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.002 Low

EPSS

Percentile

54.4%

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Skype. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the implementation of the Today tab. The issue results from the lack of context isolation. An attacker can leverage this vulnerability to execute code in the context of the current process.

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

7.2 High

AI Score

Confidence

High

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.002 Low

EPSS

Percentile

54.4%