Vulnerability identifier: #VU59101

Vulnerability risk: Low

CVSSv3.1: 3.4 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2021-39115

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Jira Service Management Server
Server applications / Other server solutions

Vendor: Atlassian

Description

The vulnerability allows a remote privileged user to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation in the Email Template feature. A remote user with "Jira Administrators" access can execute arbitrary Java code or run arbitrary system commands by injecting the code via the Email Template feature.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Jira Service Management Server: 4.17.0 - 4.17.1, 4.16.0 - 4.16.2, 4.15.0 - 4.15.1, 4.14.0 - 4.14.1, 4.13.0 - 4.13.8, 4.12.0 - 4.12.3, 4.11.0 - 4.11.1, 4.10.0 - 4.10.1, 4.9.0 - 4.9.1, 4.8.0 - 4.8.1, 4.7.0 - 4.7.1, 4.6.0 - 4.6.1, 4.5.0 - 4.5.17, 4.0.0 - 4.0.4, 4.4.0 - 4.4.3, 4.3.0 - 4.3.5, 4.2.0 - 4.2.6, 4.1.0 - 4.1.3

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External links
http://jira.atlassian.com/browse/JSDSERVER-8665

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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. However, proof of concept for this vulnerability is available.