CVE-2023-27486 Insufficient authorization validation between zones when xCAT zones are enabled
Local root users can bypass zone restrictions to obtain SSH credentials for nodes in other zones, requiring the optional zones feature to be enabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-27486?
CVE-2023-27486 is a high-severity missing authorization vulnerability in xcat2 xcat-core, published on 8 Mar 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
xCAT is a toolkit for deployment and administration of computer clusters. In versions prior to 2.16.5 if zones are configured as a mechanism to secure clusters in XCAT, it is possible for a local root user from one node to obtain credentials to SSH to any node in any zone, except the management node of the default zone. XCAT zones are not enabled by default. Only users that use the optional zone feature are impacted. All versions of xCAT prior to xCAT 2.16.5 are vulnerable. This problem has been fixed in xCAT 2.16.5. Users making use of zones should upgrade to 2.16.5. Users unable to upgrade may mitigate the issue by disabling zones or patching the management node with the fix contained in commit `85149c37f49`.
Weakness: CWE-863
Which versions are affected by CVE-2023-27486?
It affects 1 product.
Products include Xcat Project Xcat.
How do I fix CVE-2023-27486?
No fix has been published for CVE-2023-27486 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2023-27486 being exploited?
There is no known exploitation of CVE-2023-27486 in the wild and no public exploit code.
Sources
Also known as GHSA-hpxg-7428-6jvv.