Smarty up to 3.1.33-dev-3 Protection Mechanism path traversal

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.6$0-$5k0.00

A vulnerability classified as critical was found in Smarty up to 3.1.33-dev-3 (Customer Relationship Management System). This vulnerability affects an unknown code of the component Protection Mechanism. The manipulation with the input value file:./../ leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Smarty before 3.1.33-dev-4 allows attackers to bypass the trusted_dir protection mechanism via a file:./../ substring in an include statement.

The bug was discovered 09/05/2018. The weakness was shared 09/11/2018 (Website). The advisory is shared for download at github.com. This vulnerability was named CVE-2018-16831 since 09/11/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277715 (Fedora Security Update for php-Smarty (FEDORA-2019-d248c5aa39)).

Upgrading to version 3.1.33-dev-4 eliminates this vulnerability.

The entries 111284 and 124207 are related to this item.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Smarty 3.1.33-dev-4

Timelineinfo

09/05/2018 🔍
09/11/2018 +5 days 🔍
09/11/2018 +0 days 🔍
09/11/2018 +0 days 🔍
09/12/2018 +1 days 🔍
05/08/2023 +1699 days 🔍

Sourcesinfo

Advisory: 486
Status: Confirmed

CVE: CVE-2018-16831 (🔍)
See also: 🔍

Entryinfo

Created: 09/12/2018 09:46
Updated: 05/08/2023 18:04
Changes: 09/12/2018 09:46 (62), 03/22/2020 20:50 (1), 05/08/2023 18:04 (4)
Complete: 🔍

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