CVE-2021-27770

HCL Sametime is vulnerable to arbitrary HTTP requests

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.

Category

6.8
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.09%
Vendor Advisory hcltechsw.com
Affected: HCL Software Sametime
Published at:
Updated at:

References

Link Tags
https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0097430 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-27770?
CVE-2021-27770 has been scored as a medium severity vulnerability.
How to fix CVE-2021-27770?
To fix CVE-2021-27770, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-27770 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-27770 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-27770?
CVE-2021-27770 affects HCL Software Sametime.
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