Vulnerability Description
ZStack is open source IaaS(infrastructure as a service) software. In ZStack before versions 3.10.12 and 4.1.6 there is a pre-auth unsafe deserialization vulnerability in the REST API. An attacker in control of the request body will be able to provide both the class name and the data to be deserialized and therefore will be able to instantiate an arbitrary type and assign arbitrary values to its fields. This issue may lead to a Denial Of Service. If a suitable gadget is available, then an attacker may also be able to exploit this vulnerability to gain pre-auth remote code execution. For additional details see the referenced GHSL-2021-087.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Zstack | Zstack | < 3.10.12 |
Related Weaknesses (CWE)
References
- https://github.com/zstackio/zstack/security/advisories/GHSA-jfvq-548h-342xThird Party Advisory
- https://securitylab.github.com/advisories/GHSL-2021-087-zstack/ExploitThird Party Advisory
- https://github.com/zstackio/zstack/security/advisories/GHSA-jfvq-548h-342xThird Party Advisory
- https://securitylab.github.com/advisories/GHSL-2021-087-zstack/ExploitThird Party Advisory
FAQ
What is CVE-2021-32836?
CVE-2021-32836 is a vulnerability with a CVSS score of 7.5 (HIGH). ZStack is open source IaaS(infrastructure as a service) software. In ZStack before versions 3.10.12 and 4.1.6 there is a pre-auth unsafe deserialization vulnerability in the REST API. An attacker in c...
How severe is CVE-2021-32836?
CVE-2021-32836 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-32836?
Check the references section above for vendor advisories and patch information. Affected products include: Zstack Zstack.