MyBB up to 1.8.28 Admin CP Settings Management injection

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in MyBB up to 1.8.28. This issue affects some unknown processing of the component Admin CP Settings Management. The manipulation leads to injection. This vulnerability is listed as CVE-2021-43281. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in MyBB up to 1.8.28 (Content Management System). This issue affects an unknown code of the component Admin CP Settings Management. The manipulation with an unknown input leads to a injection vulnerability. Using CWE to declare the problem leads to CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability.

The weakness was presented 11/05/2021 as GHSA-8gxx-vmr9-h39p. The advisory is shared at github.com. The identification of this vulnerability is CVE-2021-43281 since 11/02/2021. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1055 for this issue.

Upgrading to version 1.8.29 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.2
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: Injection
CWE: CWE-74 / CWE-707 / CWE-20
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: MyBB 1.8.29

Timelineinfo

11/02/2021 🔍
11/05/2021 +3 days 🔍
11/05/2021 +0 days 🔍
11/10/2021 +5 days 🔍

Sourcesinfo

Product: mybb.com

Advisory: GHSA-8gxx-vmr9-h39p
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-43281 (🔍)
GCVE (CVE): GCVE-0-2021-43281
GCVE (VulDB): GCVE-100-186113

Entryinfo

Created: 11/05/2021 11:44
Updated: 11/10/2021 03:31
Changes: 11/05/2021 11:44 (40), 11/10/2021 03:15 (2), 11/10/2021 03:23 (18), 11/10/2021 03:31 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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