Security Feature Bypass in Skype for Business and Lync by Microsoft
CVE-2018-8238

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Skype
Microsoft Lync
Vendor
CVE Published:
11 July 2018

What is CVE-2018-8238?

A security feature bypass vulnerability has been identified in Skype for Business and Lync, where the applications fail to accurately process UNC path links shared in messages. This flaw can potentially allow unauthorized access to sensitive information, enabling attackers to exploit the flaw by sending specially crafted links within chat messages. Users of these platforms should be aware of this vulnerability to mitigate risks associated with potential information disclosure.

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Affected Version(s)

Microsoft Lync 2013 Service Pack 1 (32-bit)

Microsoft Lync 2013 Service Pack 1 (64-bit)

Skype Business 2016 (32-bit)

References

http://www.securityfocus.com/bid/104619
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https://portal.msrc.microsoft.com/en-US/security-guidance...
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EPSS Score

5% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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