SB2020090813 - Security restrictions bypass in SQL Server Reporting Services (SSRS)
Published: September 8, 2020
Security Bulletin ID
SB2020090813
CSH 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 vulnerability.
1) Arbitrary file upload (CVE-ID: CVE-2020-1044)
CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to insufficient validation of attachments uploaded to reports in SQL Server Reporting Services (SSRS). A remote attacker can upload file types that were disallowed by an administrator.
Remediation
Install update from vendor's website.