Description
There is a command injection vulnerability using environment variables in Bitbucket Server and Data Center. An attacker with permission to control their username can exploit this issue to execute arbitrary code on the system. This vulnerability can be unauthenticated if the Bitbucket Server and Data Center instance has enabled “Allow public signup”.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Atlassian / Bitbucket Data Centerbefore 7.0 – before 7.0
- Atlassian / Bitbucket Data Centerbefore 7.17.12 – before 7.17.12
- Atlassian / Bitbucket Data Centerbefore 7.21.6 – before 7.21.6
- Atlassian / Bitbucket Data Centerbefore 7.6.19 – before 7.6.19
- Atlassian / Bitbucket Data Centerbefore 8.0.5 – before 8.0.5
- Atlassian / Bitbucket Data Centerbefore 8.1.5 – before 8.1.5
- Atlassian / Bitbucket Data Centerbefore 8.2.4 – before 8.2.4
- Atlassian / Bitbucket Data Centerbefore 8.3.3 – before 8.3.3
- Atlassian / Bitbucket Data Centerbefore 8.4.2 – before 8.4.2
- Atlassian / Bitbucket Data Centerbefore 8.5.0 – before 8.5.0
- Atlassian / Bitbucket Serverbefore 7.0 – before 7.0
- Atlassian / Bitbucket Serverbefore 7.17.12 – before 7.17.12
- Atlassian / Bitbucket Serverbefore 7.21.6 – before 7.21.6
- Atlassian / Bitbucket Serverbefore 7.6.19 – before 7.6.19
- Atlassian / Bitbucket Serverbefore 8.0.5 – before 8.0.5
- Atlassian / Bitbucket Serverbefore 8.1.5 – before 8.1.5
- Atlassian / Bitbucket Serverbefore 8.2.4 – before 8.2.4
- Atlassian / Bitbucket Serverbefore 8.3.3 – before 8.3.3
- Atlassian / Bitbucket Serverbefore 8.4.2 – before 8.4.2
- Atlassian / Bitbucket Serverbefore 8.5.0 – before 8.5.0