DocCms 2016.5.12 Template File system/changeskin.php upload_template code injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.5$0-$5k0.00

Summaryinfo

A vulnerability was found in DocCms 2016.5.12 and classified as critical. Affected is the function upload_template of the file system/changeskin.php of the component Template File Handler. Such manipulation leads to code injection. This vulnerability is listed as CVE-2018-18835. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in DocCms 2016.5.12 and classified as critical. Affected by this issue is the function upload_template of the file system/changeskin.php of the component Template File Handler. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. CVE summarizes:

upload_template() in system/changeskin.php in DocCms 2016.5.12 allows remote attackers to execute arbitrary PHP code via a template file.

The bug was discovered 10/28/2018. The weakness was presented 10/29/2018 (Website). The advisory is available at iwantacve.cn. This vulnerability is handled as CVE-2018-18835 since 10/28/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:system/changeskin.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/28/2018 🔍
10/28/2018 +0 days 🔍
10/29/2018 +1 days 🔍
10/30/2018 +0 days 🔍
10/31/2018 +1 days 🔍
04/07/2020 +524 days 🔍

Sourcesinfo

Advisory: iwantacve.cn
Status: Not defined

CVE: CVE-2018-18835 (🔍)
GCVE (CVE): GCVE-0-2018-18835
GCVE (VulDB): GCVE-100-126158

Entryinfo

Created: 10/31/2018 05:40
Updated: 04/07/2020 19:02
Changes: 10/31/2018 05:40 (57), 04/07/2020 19:02 (1)
Complete: 🔍
Cache ID: 216::103

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