CVE-2018-17057 — TCPDF vulnerable to attackers triggering deserialization of arbitrary data

Description

An issue was discovered in TCPDF before 6.2.22. Attackers can trigger deserialization of arbitrary data via the phar:// wrapper.

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗

Release	Package	Fixed in	Advisory
Debian 14	tcpdf	6.2.26+dfsg-1	—
Debian 13	tcpdf	6.2.26+dfsg-1	—
Debian 12	tcpdf	6.2.26+dfsg-1	—

Ubuntu

Security tracker ↗

Release	Package	Fixed in	Advisory
Ubuntu 22.04 LTS	tcpdf	No fix yet	—
Ubuntu 20.04 LTS	tcpdf	No fix yet	—
Ubuntu 18.04 LTS	tcpdf	No fix yet	—
Ubuntu 16.04 LTS	tcpdf	No fix yet	—
Ubuntu 14.04 LTS	tcpdf	No fix yet	—

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Exploit-DB 1

LimeSurvey < 3.16 - Remote Code Execution EDB-46634 · webapps · Apr 2, 2019

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

Ecosystem	Package	Affected	Fixed	Record
Packagist	fooman/tcpdf	< 6.2.22	6.2.22	GHSA-5hw4-m7f3-hhx8
Packagist	la-haute-societe/tcpdf	< 6.2.22	6.2.22	GHSA-5hw4-m7f3-hhx8
Packagist	spoonity/tcpdf	< 6.2.22	6.2.22	GHSA-5hw4-m7f3-hhx8
Packagist	tecnickcom/tcpdf	< 6.2.22	6.2.22	GHSA-5hw4-m7f3-hhx8

TCPDF vulnerable to attackers triggering deserialization of arbitrary data