SB2020051134 - Denial of service in Synology Router Manager (SRM)
Published: May 11, 2020
Security Bulletin ID
SB2020051134
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) CRLF injection (CVE-ID: CVE-2019-11823)
The vulnerability allows a remote attacker to perform CRLF injection attacks.
The vulnerability exists due to insufficient filtration of user-supplied data in the DHCP monitor's hostname parsing functionality. A remote attacker on the local network can send a specially crafted network request, trigger an out-of-bounds read and cause a denial of service (DoS) condition on the target system.
Note: This vulnerability affects the following versions:
- Synology SRM 1.2.3 MR2200ac 8017
- Synology SRM 1.2.3 RT2600ac 8017
Remediation
Install update from vendor's website.