6.8med
CVE-2021-27770
HCL Sametime is vulnerable to arbitrary HTTP requests
Published 4 y ago · modified 4 mo ago · JSON
CVSS
6.8
v3.1 · CNA
CISA KEV
No
not known exploited
EPSS
0.7%
percentile 55%
Public exploits
0
none known
Summary
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.
Exploit prediction (EPSS)
0.74% probability of exploitation in the next 30 days, higher than 55% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| CNA | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L |
| CNA | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- HCL Software Sametime
Classification
- Weakness
- CWE-472 External Control of Assumed-Immutable Web Parameter
References
- support.hcltechsw.com /csm?id=kb_article&sysparm_article=KB0097430 · x_refsource_MISC, x_transferred
Sources
- CVE List: CVE-2021-27770
- NVD: CVE-2021-27770
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