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cvelistHCLCVELIST:CVE-2021-27770
HistoryMay 12, 2022 - 9:25 p.m.

CVE-2021-27770 HCL Sametime is vulnerable to arbitrary HTTP requests

2022-05-1221:25:25
CWE-472
HCL
www.cve.org
5
hcl sametime
vulnerability
faviconservice
http requests
meetings
online meeting

CVSS3

6.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

LOW

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

AI Score

8.8

Confidence

High

EPSS

0.002

Percentile

58.3%

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.

CNA Affected

[
  {
    "product": "Sametime",
    "vendor": "HCL Software",
    "versions": [
      {
        "status": "affected",
        "version": "11.6"
      }
    ]
  }
]

CVSS3

6.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

LOW

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

AI Score

8.8

Confidence

High

EPSS

0.002

Percentile

58.3%

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