Stored cross-site scripting in JetBrains YouTrack

1) Stored cross-site scripting

EUVDB-ID: #VU55613

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-37552

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

Exploit availability: No

Description

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

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote user can permanently inject 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 updates from vendor's website.

Vulnerable software versions

YouTrack: 2020.1.659 - 2021.2.17047

CPE2.3

• cpe:2.3:a:jetbrains_s.r.o.:youtrack:2020.1.659:*:*:*:*:*:*:*
• cpe:2.3:a:jetbrains_s.r.o.:youtrack:2020.1.1331:*:*:*:*:*:*:*
• cpe:2.3:a:jetbrains_s.r.o.:youtrack:2020.1.1826:*:*:*:*:*:*:*

External links

https://blog.jetbrains.com/blog/2021/08/05/jetbrains-security-bulletin-q2-2021

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.