#VU102263 Incorrect comparison in TCPDF - CVE-2024-56522

Vulnerability identifier: #VU102263

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-56522

CWE-ID: CWE-697

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
TCPDF
Web applications / Other software

Vendor: Nicola Asuni

Description

The vulnerability allows a remote attacker to bypass security restrictions.

The vulnerability exists due to incorrect comparison in unserializeTCPDFtag when processing TCPDF tag hashes. A remote attacker can bypass certain security restrictions. 

Mitigation
Install updates from vendor's website.

Vulnerable software versions

TCPDF: 6.0.0 - 6.7.8

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External links
https://github.com/tecnickcom/TCPDF/commit/d54b97cec33f4f1a5ad81119a82085cad93cec89
https://github.com/advisories/GHSA-w95c-7994-ghpr

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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.