Input validation error in LibreNMS - CVE-2019-12463
Published: September 9, 2019 / Updated: August 8, 2020
Vulnerability identifier: #VU35525
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2019-12463
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: LibreNMS Project
Affected software:
LibreNMS
LibreNMS
Detailed vulnerability description
The vulnerability allows an attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can inject RRDtool syntax with newline characters via the html/graph.php and html/graph-realtime.php scripts. RRDtool syntax is quite versatile and an attacker could leverage this to perform a number of attacks, including disclosing directory structure and filenames, disclosing file content, denial of service, or writing arbitrary files.
How to mitigate CVE-2019-12463
Update to version 1.53.