CVE-2021-36383

MEDIUMCVSS 4.3/10EPSS 0.71%

Last modified

CVE-2021-36383 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Xen Orchestra (with xo-web through 5.80.0 and xo-server through 5.84.0) mishandles authorization, as demonstrated by modified WebSocket resourceSet.getAll data is which the attacker changes the permission field from none to admin. The attacker gains access to data sets such as VMs, Backups, Audit, Users, and Groups.. EPSS estimates a 0.71% chance of exploitation in the next 30 days.

Description

Xen Orchestra (with xo-web through 5.80.0 and xo-server through 5.84.0) mishandles authorization, as demonstrated by modified WebSocket resourceSet.getAll data is which the attacker changes the permission field from none to admin. The attacker gains access to data sets such as VMs, Backups, Audit, Users, and Groups.

Metrics

CVSS 3.1
4.3/10

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

EPSS Probability
0.71%

49.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
Xen-OrchestraXo-Server<= 5.84.0
Xen-OrchestraXo-Web<= 5.80.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-36383?
Xen Orchestra (with xo-web through 5.80.0 and xo-server through 5.84.0) mishandles authorization, as demonstrated by modified WebSocket resourceSet.getAll data is which the attacker changes the permission field from none to admin. The attacker gains access to data sets such as VMs, Backups, Audit, Users, and Groups.
How severe is CVE-2021-36383?
CVE-2021-36383 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.71% probability of exploitation in the next 30 days.
How do I fix CVE-2021-36383?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-36383?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST