Authenticated session identity spoofing
Published Feb 25, 2021 · Updated Aug 3, 2024
Spoofing in Microsoft Skype for Business Server 2015 CU 8 and Lync Server 2013 allows remote authenticated users to present a false session identity. Microsoft has not published the affected component or the operation that mishandles attacker-controlled input. Exploitation requires existing low-privilege access and user interaction; successful spoofing can expose information and alter user-attributed actions.
Summary
What happened
Spoofing in Microsoft Skype for Business Server 2015 CU 8 and Lync Server 2013 allows remote authenticated users to present a false session identity. Microsoft has not published the affected component or the operation that mishandles attacker-controlled input. Exploitation requires existing low-privilege access and user interaction; successful spoofing can expose information and alter user-attributed actions.
The record
- CVE
- CVE-2021-24073
- Published
- Feb 25, 2021
- Updated
- Aug 3, 2024
- Vendor
- Microsoft
- Product
- Microsoft Skype for Business Server 2015
- Classifications
- T1656
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 25, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=2015 CU 8 <publication
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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