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Cross-site scripting in Atlassian Fisheye and Crucible



Published: 2020-06-01
Severity Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2020-4023
CWE ID CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Atlassian Fisheye
Client/Desktop applications / Office applications

Atlassian Crucible
Client/Desktop applications / Office applications

Vendor Atlassian

Security Advisory

This security advisory describes one low risk vulnerability.

1) Cross-site scripting

Severity: Low

CVSSv3: 5.3 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-4023

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data passed via the "committerFilter" parameter in the review coverage resource. A remote attacker can 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

Atlassian Fisheye: 4.6.0, 4.7.0, 4.8.0

Atlassian Crucible: 4.6.0, 4.7.0, 4.8.0

CPE External links

https://jira.atlassian.com/browse/CRUC-8482
https://jira.atlassian.com/browse/FE-7298

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open an attachment in an e-mail message.

Is there known malware, which exploits this vulnerability?

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