Deserialization Vulnerability in TCPDF by Tecnick
CVE-2018-17057

9.8CRITICAL

Key Information:

Vendor

Tecnick

Status
TcPDF
Vendor
CVE Published:
14 September 2018

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 45%

What is CVE-2018-17057?

TCPDF, a popular PHP library for generating PDF documents, contains a vulnerability where improper handling of deserialization can be exploited via the phar:// wrapper. This vulnerability allows attackers to inject and execute arbitrary code, posing a severe risk to affected applications. To mitigate potential threats, users are advised to upgrade to TCPDF version 6.2.22 or later, where this issue has been addressed. Security practitioners should remain vigilant and monitor systems integrating TCPDF for any signs of exploitation.

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Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2018-17057 - Proof of Concept

References

https://github.com/tecnickcom/TCPDF/commit/1861e33fe05f65...
x_refsource_MISC
http://seclists.org/fulldisclosure/2019/Mar/36
mailing-listx_refsource_FULLDISC
http://packetstormsecurity.com/files/152200/TCPDF-6.2.19-...
x_refsource_MISC

EPSS Score

45% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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