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

References

• https://nvd.nist.gov/vuln/detail/CVE-2018-17057
• LimeSurvey/LimeSurvey@1cdd78d
• tecnickcom/TCPDF@1861e33
• https://contao.org/en/news/security-vulnerability-cve-2018-17057.html
• https://github.com/FriendsOfPHP/security-advisories/blob/master/wallabag/tcpdf/CVE-2018-17057.yaml
• https://www.exploit-db.com/exploits/46634/
• http://packetstormsecurity.com/files/152200/TCPDF-6.2.19-Deserialization-Remote-Code-Execution.html
• http://packetstormsecurity.com/files/152360/LimeSurvey-Deserialization-Remote-Code-Execution.html
• http://seclists.org/fulldisclosure/2019/Mar/36
• https://github.com/FriendsOfPHP/security-advisories/blob/master/fooman/tcpdf/CVE-2018-17057.yaml
• https://github.com/FriendsOfPHP/security-advisories/blob/master/la-haute-societe/tcpdf/CVE-2018-17057.yaml
• https://github.com/FriendsOfPHP/security-advisories/blob/master/spoonity/tcpdf/CVE-2018-17057.yaml
• https://github.com/FriendsOfPHP/security-advisories/blob/master/tecnickcom/tcpdf/CVE-2018-17057.yaml