PT-2021-2068 · Microsoft · Skype For Business+3

Markus Wulftange · Published 2021-02-09 · Updated 2023-12-29 · CVE-2021-24099

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:N/AC:L/Au:S/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions: Skype for Business and Lync (affected versions not specified)

Description: The issue is related to insufficient input validation in the Skype for Business Server (Microsoft Lync Server), which can be exploited by a remote attacker to cause a denial of service.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2021-00917

CVE-2021-24099

Affected Products

Lync

Lync Server

Skype For Business

Skype For Business Server

References · 5

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24099 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-24099 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24099 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-00917 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-24099 · Security Note