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I. Basic Information for CVE-2021-27770
Vulnerability Information

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Vulnerability Title
HCL Sametime is vulnerable to arbitrary HTTP requests
Source: NVD (National Vulnerability Database)
Vulnerability Description
The vulnerability was discovered within the “FaviconService”. The service takes a base64-encoded URL which is then requested by the webserver. We assume this service is used by the “meetings”-function where users can specify an external URL where the online meeting will take place.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
对假设不可变Web参数的外部可控制
Source: NVD (National Vulnerability Database)
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 Technologies HCL Sametime 11.6版本存在安全漏洞,该漏洞源于FaviconService中对于外部URL缺少吸纳之。攻击者可以利用该漏洞指定在线会议将发生的外部 URL。
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
VendorProductAffected VersionsCPESubscribe
HCL SoftwareSametime 11.6 -
II. Public POCs for CVE-2021-27770
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III. Intelligence Information for CVE-2021-27770
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