CVE-2021-27770 — MEDIUM (6.8)

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.

CVSS Score

6.8

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

LOW

Availability

LOW

Affected Products

Vendor	Product	Versions
Hcltech	Sametime	11.6

Related Weaknesses (CWE)

CWE-472

References

https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0097430Vendor Advisory
https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0097430Vendor Advisory

FAQ

What is CVE-2021-27770?

CVE-2021-27770 is a vulnerability with a CVSS score of 6.8 (MEDIUM). 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...

How severe is CVE-2021-27770?

CVE-2021-27770 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-27770?

Check the references section above for vendor advisories and patch information. Affected products include: Hcltech Sametime.