#VU28493 Information disclosure in Atlassian Fisheye and Atlassian Crucible - CVE-2020-4015

Vulnerability identifier: #VU28493

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-4015

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Atlassian Fisheye
Client/Desktop applications / Office applications
Atlassian Crucible
Client/Desktop applications / Office applications

Vendor: Atlassian

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the "/json/fe/activeUserFinder.do" resource. A remote attacker can gain unauthorized access to sensitive information on the system, such as user email addresses.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Atlassian Fisheye: 4.8.0

Atlassian Crucible: 4.8.0

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External links
https://jira.atlassian.com/browse/CRUC-8468
https://jira.atlassian.com/browse/FE-7284

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.