Multiple vulnerabilities in LibreNMS

1) Input validation error

EUVDB-ID: #VU35525

Risk: High

CVSSv4.0: 6.3 [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 - Improper input validation

Exploit availability: No

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.

Mitigation

Update to version 1.53.

Vulnerable software versions

LibreNMS: 1.50.1 - 1.52

CPE2.3

• cpe:2.3:a:librenms_project:librenms:1.50.1:*:*:*:*:*:*:*
• cpe:2.3:a:librenms_project:librenms:1.51:*:*:*:*:*:*:*
• cpe:2.3:a:librenms_project:librenms:1.52:*:*:*:*:*:*:*

External links

https://www.darkmatter.ae/xen1thlabs/librenms-rrdtool-injection-vulnerability-xl-19-022/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) SQL injection

EUVDB-ID: #VU35527

Risk: High

CVSSv4.0: 6.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-12465

CWE-ID: CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.

Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.

Mitigation

Update to version 1.53.

Vulnerable software versions

LibreNMS: 1.19 - 1.52

CPE2.3

• cpe:2.3:a:librenms_project:librenms:1.19:*:*:*:*:*:*:*
• cpe:2.3:a:librenms_project:librenms:1.20:*:*:*:*:*:*:*
• cpe:2.3:a:librenms_project:librenms:1.20.1:*:*:*:*:*:*:*

External links

https://www.darkmatter.ae/xen1thlabs/librenms-sql-injection-vulnerability-xl-19-024/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.