#VU87175 Deserialization of Untrusted Data in php-svg-lib - CVE-2023-50252

Vulnerability identifier: #VU87175

Vulnerability risk: High

CVSSv4.0: 8.1 [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:U/U:Amber]

CVE-ID: CVE-2023-50252

CWE-ID: CWE-502

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
php-svg-lib
Universal components / Libraries / Libraries used by multiple products

Vendor: dompdf

Description

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

The vulnerability exists due to insecure input validation when handling `<use>` tag that references an `<image>` tag. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.

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

Mitigation
Install updates from vendor's website.

Vulnerable software versions

php-svg-lib: 0.1 - 0.5.0

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External links
https://github.com/dompdf/php-svg-lib/security/advisories/GHSA-jq98-9543-m4cr
https://github.com/dompdf/php-svg-lib/commit/08ce6a96d63ad7216315fae34a61c886dd2dc030

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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.