Skip to content

Pre-auth unsafe deserialization in ZStack REST API

Moderate
zxwing published GHSA-jfvq-548h-342x Jul 30, 2021

Package

zstack

Affected versions

<3.10.12 <4.1.6

Patched versions

3.10.12, 4.1.6

Description

Impact

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.

Patches

The problem already patched in ZStack 3.10.12, 4.1.6 and all further versions.

Workarounds

We strongly suggest users upgrade to patched versions. If you could not upgrade at once, please avoid exposing ZStack API service to public or any other untrusty network.

For more information

If you have any questions or comments about this advisory:

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H

CVE ID

No known CVE

Weaknesses

No CWEs