Debian update for smarty3

1) Code Injection

EUVDB-ID: #VU61665

Risk: Medium

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21408

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation. A remote user with access to template can run restricted static PHP methods.

Mitigation

Update smarty3 package to one of the following versions: 3.1.33+20180830.1.3a78a21f+selfpack1-1+deb10u1, 3.1.39-2+deb11u1.

Vulnerable software versions

smarty3 (Debian package): before 3.1.39-2+deb11u1

External links

http://www.debian.org/security/2022/dsa-5151

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.

2) 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 smarty3 package to one of the following versions: 3.1.33+20180830.1.3a78a21f+selfpack1-1+deb10u1, 3.1.39-2+deb11u1.

Vulnerable software versions

smarty3 (Debian package): before 3.1.39-2+deb11u1

External links

http://www.debian.org/security/2022/dsa-5151

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.

3) Code Injection

EUVDB-ID: #VU50870

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-2021-26120

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: Yes

Description

The vulnerability allows a remote user to execute arbitrary PHP code on the target system.

The vulnerability exists due to improper input validation when processing data passed via an unexpected function name after a "{function name=" substring. A remote user can send a specially crafted request and execute arbitrary PHP code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update smarty3 package to one of the following versions: 3.1.33+20180830.1.3a78a21f+selfpack1-1+deb10u1, 3.1.39-2+deb11u1.

Vulnerable software versions

smarty3 (Debian package): before 3.1.39-2+deb11u1

External links

http://www.debian.org/security/2022/dsa-5151

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.

4) Code Injection

EUVDB-ID: #VU61664

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-29454

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary PHP code on the target system.

The vulnerability exists due to improper input validation. A remote user can inject a malicious math string into he PHP template and execute arbitrary PHP code on the system.

Mitigation

Update smarty3 package to one of the following versions: 3.1.33+20180830.1.3a78a21f+selfpack1-1+deb10u1, 3.1.39-2+deb11u1.

Vulnerable software versions

smarty3 (Debian package): before 3.1.39-2+deb11u1

External links

http://www.debian.org/security/2022/dsa-5151

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Code Injection

EUVDB-ID: #VU63344

Risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-29221

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary PHP code on the target system.

The vulnerability exists due to improper input validation when processing block name or include file name. A remote attacker can send a specially crafted request and execute arbitrary PHP code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update smarty3 package to one of the following versions: 3.1.33+20180830.1.3a78a21f+selfpack1-1+deb10u1, 3.1.39-2+deb11u1.

Vulnerable software versions

smarty3 (Debian package): before 3.1.39-2+deb11u1

External links

http://www.debian.org/security/2022/dsa-5151

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker 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.