Gentoo update for Smarty

Published: 2021-05-26

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-26119 CVE-2021-26120
CWE-ID	CWE-264 CWE-94
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available.
Vulnerable software Subscribe	Gentoo Linux Operating systems & Components / Operating system
Vendor	Gentoo

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Security restrictions bypass

EUVDB-ID: #VU50869

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2021-26119

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

The vulnerability allows a remote user to escalate privileges within the application.

The vulnerability exists due to application does not properly impose security restrictions and allows to escape sandbox by allowing to access the $smarty.template_object. A remote user can perform template injection and execute arbitrary PHP code on the server.

Mitigation

Update the affected packages.
dev-php/smarty to version: 3.1.39

Vulnerable software versions

Gentoo Linux: All versions

External links

http://security.gentoo.org/
http://security.gentoo.org/glsa/202105-06

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

2) Code Injection

EUVDB-ID: #VU50870