CVE-2021-43948 : Security Advisory and Response

Affected versions of Atlassian Jira Service Management Server and Data Center allow authenticated remote attackers to view the names of private objects via an Improper Authorization vulnerability in the "Move objects" feature before version 4.21.0.

Understanding CVE-2021-43948

This CVE pertains to a security vulnerability in Atlassian Jira Service Management Server and Data Center that enables authenticated remote attackers to access private object names.

What is CVE-2021-43948?

The CVE-2021-43948 vulnerability allows authenticated remote attackers to view private object names due to improper authorization in the "Move objects" feature of affected Atlassian products.

The Impact of CVE-2021-43948

The vulnerability poses a risk of exposing sensitive information to unauthorized users, potentially leading to data breaches or unauthorized access to private objects within the Jira Service Management Server and Data Center.

Technical Details of CVE-2021-43948

This section provides detailed technical insights into the CVE-2021-43948 vulnerability.

Vulnerability Description

The vulnerability lies in the improper authorization implementation in the "Move objects" feature of Atlassian Jira Service Management Server and Data Center, allowing attackers to access private object names.

Affected Systems and Versions

Product: Jira Service Management Server
Vendor: Atlassian
Versions Affected: Before 4.21.0 (unspecified version)
Product: Jira Service Management Data Center
Vendor: Atlassian
Versions Affected: Before 4.21.0 (unspecified version)

Exploitation Mechanism

Authenticated remote attackers exploit the vulnerability by leveraging the Improper Authorization flaw in the "Move objects" feature to gain unauthorized access to private object names.

Mitigation and Prevention

Protect your systems against CVE-2021-43948 with the following measures:

Immediate Steps to Take

Upgrade affected Atlassian products to version 4.21.0 or newer to mitigate the vulnerability.
Monitor and restrict user access to sensitive objects within the Jira Service Management Server and Data Center.

Long-Term Security Practices

Regularly review and update access control policies to prevent unauthorized access.
Conduct security audits and penetration testing to identify and address vulnerabilities.

Patching and Updates

Stay informed about security updates and patches released by Atlassian to address vulnerabilities like CVE-2021-43948.