CVE-2021-43787

Nodebb is an open source Node.js based forum software. In affected versions a prototype pollution vulnerability in the uploader module allowed a malicious user to inject arbitrary data (i.e. javascript) into the DOM, theoretically allowing for an account takeover when used in conjunction with a path traversal vulnerability disclosed at the same time as this report. The vulnerability has been patched as of v1.18.5. Users are advised to upgrade as soon as possible.

CVSS v3 6.1 MEDIUM
CVSS v2.0 4.3 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:N/I:P/A:N

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://blog.sonarsource.com/nodebb-remote-code-execution-with-one-shot/	Exploit Third Party Advisory
https://github.com/NodeBB/NodeBB/commit/1783f918bc19568f421473824461ff2ed7755e4c	Patch Third Party Advisory
https://github.com/NodeBB/NodeBB/releases/tag/v1.18.5	Patch Release Notes Third Party Advisory
https://github.com/NodeBB/NodeBB/security/advisories/GHSA-wx69-rvg3-x7fc	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:nodebb:nodebb:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-11-29 20:15

Updated : 2022-10-27 19:45

NVD link : CVE-2021-43787

Mitre link : CVE-2021-43787

CVE.ORG link : CVE-2021-43787

JSON object : View

Products Affected

nodebb

nodebb

CWE

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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