CVE-2021-21377

Open Redirect in OMERO.web

Description

OMERO.web is open source Django-based software for managing microscopy imaging. OMERO.web before version 5.9.0 supports redirection to a given URL after performing login or switching the group context. These URLs are not validated, allowing redirection to untrusted sites. OMERO.web 5.9.0 adds URL validation before redirecting. External URLs are not considered valid, unless specified in the omero.web.redirect_allowed_hosts setting.

Category

4.8
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.31%
Vendor Advisory openmicroscopy.org
Affected: ome omero-web
Published at:
Updated at:

References

Link Tags
https://pypi.org/project/omero-web/ third party advisory
https://github.com/ome/omero-web/blob/master/CHANGELOG.md#590-march-2021 third party advisory release notes
https://github.com/ome/omero-web/commit/952f8e5d28532fbb14fb665982211329d137908c third party advisory patch
https://github.com/ome/omero-web/security/advisories/GHSA-g4rf-pc26-6hmr third party advisory
https://www.openmicroscopy.org/security/advisories/2021-SV2/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-21377?
CVE-2021-21377 has been scored as a medium severity vulnerability.
How to fix CVE-2021-21377?
To fix CVE-2021-21377, 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-2021-21377 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-21377 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-2021-21377?
CVE-2021-21377 affects ome omero-web.
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