CVE-2021-32707

Nextcloud Mail is a mail app for Nextcloud. In versions prior to 1.9.6, the Nextcloud Mail application does not, by default, render images in emails to not leak the read state. The privacy filter failed to filter images with a `background-image` CSS attribute. Note that the images were still passed through the Nextcloud image proxy, and thus there was no IP leakage. The issue was patched in version 1.9.6 and 1.10.0. No workarounds are known to exist.

CVSS v3 4.3 MEDIUM
CVSS v2.0 4.0 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:N/I:P/A:N

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/nextcloud/mail/pull/5189	Patch Third Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xxp4-44xc-8crh	Third Party Advisory
https://hackerone.com/reports/1215251	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:nextcloud:mail:*:*:*:*:*:*:*:*

History

20 Nov 2024, 14:49

Type	Values Removed	Values Added
CPE	cpe:2.3:a:nextcloud:nextcloud_mail::::::::	cpe:2.3:a:nextcloud:mail::::::::
First Time		Nextcloud mail

Information

Published : 2021-07-12 19:15

Updated : 2024-11-20 14:49

NVD link : CVE-2021-32707

Mitre link : CVE-2021-32707

CVE.ORG link : CVE-2021-32707

JSON object : View

Products Affected

nextcloud

mail

CWE

NVD-CWE-Other CWE-20

Improper Input Validation

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

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