#VU58476 Cross-site scripting in IBM Qradar SIEM - CVE-2021-29849

Vulnerability identifier: #VU58476

Vulnerability risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-29849

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
IBM Qradar SIEM
Client/Desktop applications / Other client software

Vendor: IBM Corporation

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 in Web UI. 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 updates from vendor's website.

Vulnerable software versions

IBM Qradar SIEM: 7.3.0 Patch 1 - 7.3.3, 7.4.0 - 7.4.3 Fix Pack 3

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External links
https://www.ibm.com/blogs/psirt/security-bulletin-ibm-qradar-siem-is-vulnerable-to-cross-site-scripting-xss-cve-2021-29849/
https://www.ibm.com/support/pages/node/6520476

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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.