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CVE-2017-7357: Atlassian Hipchat Server: Remote code execution

CVE-2017-7357 is rated critical with a CVSS v3.0 base score of 9.1 and affects Atlassian Hipchat Server. Per its scoring, it can be exploited over the network, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

Hipchat Server before 2.2.3 allows remote authenticated users with Server Administrator level privileges to execute arbitrary code by importing a file.

Severity breakdown

CVSS v3.0 9.1: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

• Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
• Attack complexity: Low. No special conditions; the attack can be repeated reliably.
• Privileges required: High. Administrative-level privileges are needed.
• User interaction: None. No action from any user is needed.
• Scope: Changed. Impact reaches beyond the vulnerable component to other resources.
• Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
• Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
• Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-434: Unrestricted Upload of File with Dangerous Type

The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

Affected products

• Atlassian Hipchat Server: up to and including 2.2.2

References

• https://jira.atlassian.com/browse/HCPUB-2903
• https://confluence.atlassian.com/hc/hipchat-server-security-advisory-2017-04-12-887732597.html
• http://www.securityfocus.com/bid/97621
• http://www.securityfocus.com/archive/1/540410/100/0/threaded