GitHub Advisoryadvisory · Packagist

GHSA-w5r2-gvgf-mpm8 Improper Encoding or Escaping of Output and Injection in LibreNMS

HIGH Published 2019-10-11 Modified 2021-05-11 Official page ↗
Aliases
CVE-2019-12463
Ecosystem
Packagist
Packages
librenms/librenms
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-116, CWE-74
Reviewed
2019-09-25

Affected packages

• Packagist librenms/librenms: >= 1.50.1, < 1.53 → fixed in 1.53

Description

An issue was discovered in LibreNMS 1.50.1. The scripts that handle graphing options (includes/html/graphs/common.inc.php and includes/html/graphs/graphs.inc.php) do not sufficiently validate or encode several fields of user supplied input. Some parameters are filtered with mysqli_real_escape_string, which is only useful for preventing SQL injection attacks; other parameters are unfiltered. This allows an attacker to 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. NOTE, relative to CVE-2019-10665, this requires authentication and the pathnames differ.

Related

Alias · CVE (1)

  • CVE-2019-12463 An issue was discovered in LibreNMS 1.50.1. vulnerability

Weakness · CWE (2)

  • CWE-116 Improper Encoding or Escaping of Output weakness
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component weakness

References