Vulnerability identifier: #VU24839

Vulnerability risk: Low

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-7911

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
TeamCity
Web applications / CRM systems

Vendor: JetBrains s.r.o.

Description

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

The vulnerability exists due to insufficient sanitization of user-supplied data on several user-level pages. A remote attacker 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

TeamCity: 2017.1 - 2019.1.5

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External links
http://blog.jetbrains.com
http://blog.jetbrains.com/blog/2020/01/24/jetbrains-security-bulletin-q4-2019/

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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.