SB2021102616 - Information disclosure in Nextcloud Mail
Published: October 26, 2021
Security Bulletin ID
SB2021102616
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Information disclosure (CVE-ID: CVE-2021-39220)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to the affected application does by default not render images in emails to not leak the read state or user IP. A remote authenticated attacker can gain unauthorized access to sensitive information on the system.
Remediation
Install update from vendor's website.