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CVE-2021-27773— HCL Sametime is vulnerable to clickjacking

Quick assessment

Affected
HCL Software Sametime
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

HCL Sametime是HCL Technologies的一个会议解决方案。 HCL Sametime 11.6 版本存在安全漏洞，攻击者可以利用该漏洞在会议聊天中实现点击劫持攻击。

CVSS 4.2 · Medium EPSS 0.47% · P38

Possible ATT&CK Techniques 2 AI

T1053.001 T1566.002 · Spearphishing Link
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I. Basic Information for CVE-2021-27773

Vulnerability Information
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Vulnerability Title
HCL Sametime is vulnerable to clickjacking
Source: CVE Program / CVE List V5
Vulnerability Description
This vulnerability allows users to execute a clickjacking attack in the meeting's chat.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键信息的UI错误表达
Source: CVE Program / CVE List V5
Vulnerability Title
HCL Technologies HCL Sametime 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HCL Sametime是HCL Technologies的一个会议解决方案。 HCL Sametime 11.6 版本存在安全漏洞，攻击者可以利用该漏洞在会议聊天中实现点击劫持攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
HCL Software Sametime 11.6 -

II. Public POCs for CVE-2021-27773

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III. Intelligence Information for CVE-2021-27773

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Other References for CVE-2021-27773 (1)

Same Patch Batch · HCL Software · 2022-05-12 · 7 CVEs total

CVE-2021-27771 8.2 HIGH HCL Sametime is susceptible a file transfer service vulnerability
CVE-2021-27777 7.5 HIGH HCL Unica Platform is vulnerable to XML External Entity (XXE) injection
CVE-2021-27772 7.1 HIGH HCL Sametime is vulnerable to an information disclosure
CVE-2021-27770 6.8 MEDIUM HCL Sametime is vulnerable to arbitrary HTTP requests
CVE-2021-27768 6.3 MEDIUM An SSL certificate host verification vulnerability affects HCL Verse for Android
CVE-2021-27769 5.3 MEDIUM HCL Sametime is vulnerable to an information disclosure

IV. Related Vulnerabilities

Same product: Sametime
Same vendor: HCL Software
Same weakness: CWE-451

V. Comments for CVE-2021-27773

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