CVE-2021-32836
Last modified
CVE-2021-32836 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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. EPSS estimates a 1.97% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Zstack | Zstack | < 3.10.12 |
| Zstack | Zstack | >= 4.1.0, < 4.1.6 |
References
- https://github.com/zstackio/zstack/security/advisories/GHSA-jfvq-548h-342xThird Party Advisory
- https://securitylab.github.com/advisories/GHSL-2021-087-zstack/Exploit, Third Party Advisory
- https://github.com/zstackio/zstack/security/advisories/GHSA-jfvq-548h-342xThird Party Advisory
- https://securitylab.github.com/advisories/GHSL-2021-087-zstack/Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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