Vulnerability identifier: #VU21327

Vulnerability risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-8443

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

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

Vendor: Atlassian

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in the "ViewUpgrades" resource. A remote attacker who have obtained access to administrator's session can bypass implemented security restrictions and gain unauthorized access to the "ViewUpgrades" administrative resource without needing to re-authenticate to pass "WebSudo".

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Jira Software: 7.0 - 7.0.11, 7.6.0 - 7.6.16, 7.13.0 - 7.13.3, 7.12.0 - 7.12.4, 7.11.0 - 7.11.3, 7.8.0 - 7.8.5, 7.7.0 - 7.7.5, 7.5.0 - 7.5.4, 7.4.0 - 7.4.6, 7.3 - 7.3.9, 7.2.0 - 7.2.15, 7.1 - 7.1.10, 7.10.0 - 7.10.3, 7.9.0 - 7.9.3, 8.0.0 - 8.0.3, 8.1.0

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External links
http://jira.atlassian.com/browse/JRASERVER-69240

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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.