GetSimpleCMS 3.3.15 EML File admin/upload.php unrestricted upload

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in GetSimpleCMS 3.3.15. Affected is an unknown function of the file admin/upload.php of the component EML File Handler. Executing a manipulation can lead to unrestricted upload. This vulnerability is registered as CVE-2018-19421. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in GetSimpleCMS 3.3.15. It has been declared as critical. This vulnerability affects an unknown part of the file admin/upload.php of the component EML File Handler. The manipulation with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In GetSimpleCMS 3.3.15, admin/upload.php blocks .html uploads but Internet Explorer render HTML elements in a .eml file, because of admin/upload-uploadify.php, and validate_safe_file in admin/inc/security_functions.php.

The bug was discovered 11/14/2018. The weakness was published 11/21/2018 (Website). The advisory is shared for download at github.com. This vulnerability was named CVE-2018-19421 since 11/21/2018. The exploitation appears to be easy. The attack can be initiated remotely. A single authentication is necessary for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1608.002.

The vulnerability was handled as a non-public zero-day exploit for at least 7 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:admin/upload.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.

Similar entry is available at VDB-127059. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.3

VulDB Base Score: 4.7
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.8
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: Unrestricted upload
CWE: CWE-434 / CWE-284 / CWE-266
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

11/14/2018 🔍
11/21/2018 +7 days 🔍
11/21/2018 +0 days 🔍
11/21/2018 +0 days 🔍
11/22/2018 +1 days 🔍
06/11/2023 +1662 days 🔍

Sourcesinfo

Product: github.com

Advisory: 1301
Status: Not defined

CVE: CVE-2018-19421 (🔍)
GCVE (CVE): GCVE-0-2018-19421
GCVE (VulDB): GCVE-100-127060
See also: 🔍

Entryinfo

Created: 11/22/2018 08:07
Updated: 06/11/2023 09:39
Changes: 11/22/2018 08:07 (57), 04/14/2020 14:27 (1), 06/11/2023 09:39 (3)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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