CMS Made Simple up to 2.2.15 Phar File unrestricted upload

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability was found in CMS Made Simple up to 2.2.15. It has been rated as critical. This issue affects some unknown processing of the component Phar File Handler. The manipulation leads to unrestricted upload. This vulnerability is documented as CVE-2021-28998. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in CMS Made Simple up to 2.2.15 (Content Management System). It has been rated as critical. This issue affects an unknown function of the component Phar File Handler. The manipulation with an unknown input leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

File upload vulnerability in CMS Made Simple through 2.2.15 allows remote authenticated attackers to gain a webshell via a crafted phar file.

The weakness was released 05/08/2023. The advisory is shared at seclists.org. The identification of this vulnerability is CVE-2021-28998 since 03/22/2021. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1608.002 for this issue.

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

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 6.3
VulDB Temp Score: 6.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.2
NVD Vector: 🔍

CNA Base Score: 7.2
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Unrestricted upload
CWE: CWE-434 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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

03/22/2021 🔍
05/08/2023 +776 days 🔍
05/08/2023 +0 days 🔍
01/29/2025 +632 days 🔍

Sourcesinfo

Advisory: seclists.org
Status: Not defined

CVE: CVE-2021-28998 (🔍)
GCVE (CVE): GCVE-0-2021-28998
GCVE (VulDB): GCVE-100-228221

Entryinfo

Created: 05/08/2023 17:07
Updated: 01/29/2025 16:59
Changes: 05/08/2023 17:07 (37), 05/31/2023 08:12 (11), 01/29/2025 16:59 (26)
Complete: 🔍
Cache ID: 216::103

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