CVE-2019-12463
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
librenms/librenmsPackagist | >= 1.50.1, < 1.53 | 1.53 |
Affected products
3- LibreNMS/LibreNMSdescription
Patches
Vulnerability mechanics
References
4- www.darkmatter.ae/xen1thlabs/librenms-rrdtool-injection-vulnerability-xl-19-022/nvdExploitThird Party Advisory
- github.com/advisories/GHSA-w5r2-gvgf-mpm8ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2019-12463ghsaADVISORY
- www.darkmatter.ae/xen1thlabs/librenms-rrdtool-injection-vulnerability-xl-19-022ghsaWEB
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