#VU12762 Improper input validation in Jira Software - CVE-2018-5224

Vulnerability identifier: #VU12762

Vulnerability risk: Low

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-5224

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Jira Software
Client/Desktop applications / Other client software

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, who has permission to create a repository in Bamboo, edit an existing plan in Bamboo that has a non-linked Mercurial repository or create a plan in Bamboo either globally or in a project using Bamboo Specs, can execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Update to version 6.3.3 or 6.4.1.

Vulnerable software versions

Jira Software: 2.7.1 - 2.7.4, 2.8 - 2.8.3, 2.9 - 2.9.5, 2.10 - 2.10.4, 2.11, 2.12 - 2.12.1, 2.13, 2.14 - 2.14.2, 2.15, 2.16, 3.0 - 3.0.3, 3.1 - 3.13.5, 3.2 - 3.2.4, 3.3 - 3.3.2, 3.4 - 3.4.1, 3.5 - 3.5.3, 3.6 - 3.6.5, 3.7 - 3.7.4, 3.8 - 3.8.4, 3.9 - 3.9.3, 4.0 - 4.0.2, 4.1 - 4.1.1, 6.2.1 - 6.2.7, 6.3.0 - 6.3.15, 6.4.0

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External links
https://jira.atlassian.com/browse/BAM-19743

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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