tecnick tcpdf up to 6.7.x Tag Hash unserializeTCPDFtag comparison

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.9$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in tecnick tcpdf up to 6.7.x. This impacts the function unserializeTCPDFtag of the component Tag Hash Handler. This manipulation causes comparison. This vulnerability is registered as CVE-2024-56522. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in tecnick tcpdf up to 6.7.x. It has been declared as problematic. Affected by this vulnerability is the function unserializeTCPDFtag of the component Tag Hash Handler. The manipulation with an unknown input leads to a comparison vulnerability. The CWE definition for the vulnerability is CWE-697. The product compares two entities in a security-relevant context, but the comparison is incorrect, which may lead to resultant weaknesses. The impact remains unknown. The summary by CVE is:

An issue was discovered in TCPDF before 6.8.0. unserializeTCPDFtag uses != (aka loose comparison) and does not use a constant-time function to compare TCPDF tag hashes.

This vulnerability is known as CVE-2024-56522 since 12/27/2024. The exploitation appears to be difficult. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 231980 (Linux Distros Unpatched Vulnerability : CVE-2024-56522), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.8.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch d54b97cec33f4f1a5ad81119a82085cad93cec89 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (231980) and EUVD (EUVD-2024-3618). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 5.9

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (MITRE): 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Comparison
CWE: CWE-697
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 231980
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2024-56522

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: tcpdf 6.8.0
Patch: d54b97cec33f4f1a5ad81119a82085cad93cec89

Timelineinfo

12/27/2024 🔍
12/27/2024 +0 days 🔍
12/27/2024 +0 days 🔍
06/15/2025 +169 days 🔍

Sourcesinfo

Status: Confirmed

CVE: CVE-2024-56522 (🔍)
GCVE (CVE): GCVE-0-2024-56522
GCVE (VulDB): GCVE-100-289375
EUVD: 🔍

Entryinfo

Created: 12/27/2024 08:48
Updated: 06/15/2025 01:43
Changes: 12/27/2024 08:48 (57), 12/30/2024 17:52 (12), 03/07/2025 19:00 (2), 06/15/2025 01:43 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!