Path traversal in Smarty - CVE-2018-13982

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Main Vulnerability Database Vulnerabilities #VU61666

Path traversal in Smarty - CVE-2018-13982

Published: March 28, 2022


Vulnerability identifier: #VU61666
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-13982
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in Smarty_Security::isTrustedResourceDir(). A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.


Affected software

Smarty
Fedora
Ubuntu
smarty3 (Ubuntu package)
php-Smarty

How to mitigate CVE-2018-13982

Install update from vendor's website.

Smarty - update to 3.1.33
smarty3 (Ubuntu package) - addressed in versions 3.1.31+20161214.1.c7d42e4+selfpack1-3ubuntu0.1, 3.1.39-2ubuntu0.21.10.1
php-Smarty - addressed in versions 3.1.33-1.el7, 3.1.33-1.fc28, 3.1.33-1.fc29

External References

Related Security Bulletins