Vulnerability CVE-2021-36383


Published: 2021-07-12

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.

Type:

CWE-863

(Incorrect Authorization)

CVSS2 => (AV:N/AC:L/Au:S/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4/10
2.9/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Xen-orchestra -> Xo-server 
Xen-orchestra -> Xo-web 

 References:
https://github.com/vatesfr/xen-orchestra/issues/5712

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