CVE-2021-27772 - CVE House

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Status published High CVE-2021-27772

HCL Sametime is vulnerable to an information disclosure

7.1 CVSS

Vulnerability Description

Users are able to read group conversations without actively taking part in them. Next to one to one conversations, users are able to start group conversations with multiple users. It was found possible to obtain the contents of these group conversations without being part of it. This could lead to information leakage where confidential information discussed in private groups is read by other users without the users knowledge.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0097430

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Affected Vendor

HCL Software

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Affected Software

Sametime

Vulnerable Versions:

11.6

Timeline

Official Publish: May 12th, 2022

Last Modified: September 17th, 2024

Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application

T1078 Valid Accounts

T1548 Abuse Elevation Control Mechanism

Privilege Escalation

T1021 Remote Services

Lateral Movement

T1098 Account Manipulation

Defense Evasion