SB2023082201 - Authentication bypass in Varnish Cache vmod-digest module
Published: August 22, 2023
Security Bulletin ID
SB2023082201
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: N/A)
The vulnerability allows a remote attacker to bypass authentication process or gain access to sensitive information.
The vulnerability exists due to insufficient validation of base64-encoded data in vmod-digest module. A remote attacker can send specially crafted data to the server and bypass HTTP Basic authentication or gain access to sensitive information from reading out of band workspace data.
Remediation
Install update from vendor's website.