PT-2024-36831 · Tcpdf+2 · Tcpdf+2

Published 2024-12-27 · Updated 2025-08-21 · CVE-2024-56522

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:C/I:N/A:N

Name of the Vulnerable Software and Affected Versions TCPDF versions prior to 6.8.0

Description An issue was discovered in the unserializeTCPDFtag function, which uses loose comparison (!=) and does not utilize a constant-time function to compare TCPDF tag hashes. This could potentially lead to security issues.

Recommendations For versions prior to 6.8.0, update to version 6.8.0 or later to resolve the issue. As a temporary workaround, consider disabling the unserializeTCPDFtag function until a patch is available.

Fix

Type Confusion

Weakness Enumeration

CWE-843

CWE-697

Related Identifiers

BDU:2025-10830

CVE-2024-56522

DLA-4199-1

DSA-5933-1

GHSA-W95C-7994-GHPR

MGASA-2025-0059

Affected Products

Debian

Red Os

Tcpdf

References · 28

• https://github.com/tecnickcom/TCPDF/commit/d54b97cec33f4f1a5ad81119a82085cad93cec89 · Patch
• https://osv.dev/vulnerability/GHSA-w95c-7994-ghpr · Vendor Advisory
• https://osv.dev/vulnerability/DLA-4199-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-56522 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-56522 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2024-56522 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-10830 · Security Note
• http://repo.red-soft.ru/redos/7.3c/x86_64/updates · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2024-56522 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2024-56522 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2024-56522 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2025-0059 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2025-0059.html · Security Note
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/ZX3ABLKKEVGN4M4BBUJFPBNWW5SHP7J3 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-5933-1 · Vendor Advisory