A server-side template injection vulnerability exists in the Twig theme rendering sandbox of Mautic.

mautic/core · CWE-1336 · CWE-1336

Affectedmautic/core

FixUpdate to 5.2.12, 6.0.10, 7.2.2 or newer

PublishedOct 26, 12:39 · Mautic

ScoredOct 26 · 8.8 · Mautic

Exploit code publicNone known · checked 22:18 UTC

ExploitedNone known · CISA KEV checked 22:30 UTC

What we know

No known exploitation. CISA KEV, checked 22:30 UTC.

No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 22:18 UTC.

An attacker needs network access and an account. CVSS: network, low privileges.

A successful attack can read and change data and take the service down. CVSS: high impact on confidentiality, integrity and availability.

A successful attack gives full control of the affected system. CISA: technical impact total.

Description

A server-side template injection vulnerability exists in the Twig theme rendering sandbox of Mautic. The sandbox introduced to restrict user-uploaded theme templates (the fix for GHSA-9fx4-7cmj-47vg) does not fully enforce its restrictions, allowing a crafted theme template to escape the sandbox. An authenticated user with the core:themes:create permission can upload a malicious theme whose template is later rendered, resulting in execution of arbitrary code on the server with the privileges of the web server process. This allows the attacker to execute operating system commands, read server-side files including configuration files and database credentials, write files, and reach internal services. In default installations the core:themes:create permission is granted to the Administrator role, and in multi-operator setups it may be delegated to other roles. This is an incomplete fix for GHSA-9fx4-7cmj-47vg.

From Mautic

Affected and fixed versions

ProductAffectedFixed inmautic/core1.3.0 – before 5.2.125.2.12mautic/core6.0.0 – before 6.0.106.0.10mautic/core7.0.0 – before 7.2.27.2.2

Exploit code

Exploit-DBnone knownMetasploitnone knownNucleinone known

References

github.com/mautic/mautic/security/advisories/GHSA-h7pm-79gc-8867 · github.com