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CVE-2021-32836
CVE information
Published
Last Modified
CVSSv2.0 Severity
CVSSv3.1 Severity
Impact Analysis
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..
CVSSv2.0 Score
- Severity
- Medium
- Base Score
- 6.8/10
- Exploit Score
- 8.6/10
- Access Vector
- Network
- Access Complexity
- Medium
- Authentication Required
- None
- Impact Score
- 6.4/10
- Confidentiality Impact
- Partial
- Availability Impact
- Partial
- Integrity Impact
- Partial
CVSSv3.1 Score
- Severity
- High
- Base Score
- 8.1/10
- Exploit Score
- 2.2/10
- Access Vector
- Network
- Access Complexity
- High
- Privileges Required
- None
- Impact Score
- 5.9/10
- Confidentiality Impact
- High
- Availability Impact
- High
- Integrity Impact
- High
- Scope
- Unchanged
- User Interaction
- None
Products Affected
| CPE | Affected | Vulnerable | Excluding | Edit |
|---|---|---|---|---|
| cpe:2.3:a:zstack:zstack:*:*:*:*:*:*:*:* |
Yes
|
- | 3.10.12 | |
| cpe:2.3:a:zstack:zstack:*:*:*:*:*:*:*:* |
Yes
|
4.1.0 | 4.1.6 |