Vulnerability identifier: #VU19304

Vulnerability risk: Low

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

CVE-ID: CVE-2019-3403

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: Yes

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

Vendor: Atlassian

Description

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

The vulnerability exists due to user enumeration issue in the /rest/api/2/user/picker rest resource. A remote attacker can enumerate users on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Jira Software: 7.13.0 - 7.13.2, 8.0.0 - 8.0.3, 8.1.0

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External links
http://jira.atlassian.com/browse/JRASERVER-69242

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