Security restrictions bypass in Apache CouchDB



| Updated: 2021-10-14
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-38295
CWE-ID CWE-264
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 CouchDB
Server applications / Database software

Vendor Apache Foundation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Security restrictions bypass

EUVDB-ID: #VU57237

Risk: Medium

CVSSv4.0: 1.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2021-38295

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

The vulnerability allows a remote user to escalate privileges within the application.

The vulnerability exists due to application does not properly impose security restrictions and allows a remote authenticated users with permission to create documents in a database to attach a HTML attachment to a document. If a CouchDB administrator opens such attachment the HTML code will be executed in the administrator's browser.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

CouchDB: 3.0.0 - 3.1.1

CPE2.3 External links

https://docs.couchdb.org/en/stable/cve/2021-38295.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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