#VU12441 Improper input validation in Atlassian Fisheye and Atlassian Crucible - CVE-2018-5223

Vulnerability identifier: #VU12441

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-5223

CWE-ID: CWE-20

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 authenticated attacker to execute arbitrary code on the target system.

The weakness exists due to incorrect check if a configured Mercurial repository URI contained values that the Windows operating system may consider argument parameters. A remote attacker can supply a specially crafted input and execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Update to versions 4.4.6, 4.5.3 or 4.6.0.

Vulnerable software versions

Atlassian Fisheye: 4.4.0 - 4.5.2

Atlassian Crucible: 4.4.0 - 4.5.2

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External links
https://jira.atlassian.com/browse/CRUC-8181

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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