Vulnerability identifier: #VU21143

Vulnerability risk: Low

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-8444

CWE-ID: CWE-79

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 perform cross-site scripting (XSS) attacks.

The vulnerability exists in the wikirenderer component due to insufficient sanitization of user-supplied data in image attribute specification. A remote authenticated attacker can send a specially crafted comment or worklog, trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Jira Software: 7.6.0 - 7.6.15, 8.3.0 - 8.3.1, 8.2.0 - 8.2.4, 8.1.0 - 8.1.2, 8.0.0 - 8.0.3, 7.13.0 - 7.13.5, 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, 7.0 - 7.0.11, 6.1-OD-1, 6.0 - 6.0.3, 5.2.11, 4.4 - 4.4.5, 4.3 - 4.3.4, 4.2 - 4.2.4-b591, 4.1 - 4.1.2, 3.10 - 3.10.2, 3.4 - 3.4.3, 3.3 - 3.3.3, 2.6 - 2.6.1, 2.5.1 - 2.5.3, 2.4 - 2.4.1, 2.0.2, 1.4.3, 7.10.0 - 7.10.3, 7.9.0 - 7.9.3, 3.11 - 3.11.4, 3.9 - 3.9.3, 3.8 - 3.8.4, 3.7 - 3.7.4, 3.6 - 3.6.5, 3.5 - 3.5.3, 3.2 - 3.2.4, 3.1 - 3.1.2, 3.0 - 3.0.3, 2.14 - 2.14.2, 2.12 - 2.12.1, 2.10 - 2.10.4, 2.9 - 2.9.5, 2.8 - 2.8.3, 2.7.1 - 2.7.4, 6.8.0 - 6.8.2, 6.7.0 - 6.7.16, 6.6.0 - 6.6.3, 6.5.0 - 6.5.2, 6.4.0 - 6.4.14, 6.3.0 - 6.3.15, 6.2.1 - 6.2.7, 4.0 - 4.0.2, 3.13 - 3.13.5, 3.12 - 3.12.3

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External links
http://jira.atlassian.com/browse/JRASERVER-69779
http://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0833

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