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Sandbox escape through template_object in smarty

High severity GitHub Reviewed Published Feb 21, 2021 in smarty-php/smarty • Updated Feb 7, 2024

Package

composer smarty/smarty (Composer)

Affected versions

< 3.1.39

Patched versions

3.1.39

Description

Sandbox protection could be bypassed through access to an internal Smarty object that should have been blocked. Sites that rely on Smarty Security features should upgrade as soon as possible. Please upgrade to 3.1.39 or higher.

References

@wisskid wisskid published to smarty-php/smarty Feb 21, 2021
Published by the National Vulnerability Database Feb 22, 2021
Reviewed Mar 2, 2021
Published to the GitHub Advisory Database Mar 2, 2021
Last updated Feb 7, 2024

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS score

0.194%
(58th percentile)

Weaknesses

No CWEs

CVE ID

CVE-2021-26119

GHSA ID

GHSA-w5hr-jm4j-9jvq

Source code

Credits

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