CVE-2023-49950: siem XSS — Exploit & Fix

Description

The Jinja templating in Logpoint SIEM 6.10.0 through 7.x before 7.3.0 does not correctly sanitize log data being displayed when using a custom Jinja template in the Alert view. A remote attacker can craft a cross-site scripting (XSS) payload and send it to any system or device that sends logs to the SIEM. If an alert is created, the payload will execute upon the alert data being viewed with that template, which can lead to sensitive data disclosure.

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CVSS v3.1 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
logpoint	siem	6.10.0 — 7.3.0

References

Advisories & Patches

https://servicedesk.logpoint.com/hc/en-us/articles/14124495377437-Stored-XSS-Vulnerability-in-Alerts-via-Log-Injection https://servicedesk.logpoint.com/hc/en-us/articles/14124495377437-Stored-XSS-Vulnerability-in-Alerts-via-Log-Injection

Exploits

https://github.com/shrikeinfosec/cve-2023-49950/blob/main/cve-2023-49950.md https://github.com/shrikeinfosec/cve-2023-49950/blob/main/cve-2023-49950.md

Frequently Asked Questions

What is CVE-2023-49950? +

The Jinja templating in Logpoint SIEM 6.10.0 through 7.x before 7.3.0 does not correctly sanitize log data being displayed when using a custom Jinja template in the Alert view. A remote attacker can craft a cross-site scripting (XSS) payload and send it to any system or device that sends logs to the SIEM. If an alert is created, the payload will execute upon the alert data being viewed with that template, which can lead to sensitive data disclosure. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2023-49950? +

CVE-2023-49950 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-49950? +

CVE-2023-49950 affects products from logpoint, specifically: siem. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-49950? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2023-49950