Multiple vulnerabilities in Cacti

1) Cross-site scripting

EUVDB-ID: #VU9338

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-16785

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data via the PATH_INFO to host.php.. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Update to version 1.1.28.

Vulnerable software versions

Cacti: 1.1.27

External links

http://github.com/Cacti/cacti/issues/1071

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

2) OS command injection

EUVDB-ID: #VU9571

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-16641

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a remote high-privileged attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to an error in lib/rrd.php. A remote attacker can place the Log Path under the web root, make a specially crafted specially crafted action=save request containing the 'path_rrdtool' parameter to settings.php and execute arbitrary shell commands with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update to version 1.1.28.

Vulnerable software versions

Cacti: 1.1.27

External links

http://github.com/Cacti/cacti/issues/1057

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

3) Remote code execution

EUVDB-ID: #VU9570

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-16660

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote high-privileged attacker to execute arbitrary code on the target system.

The vulnerability exists due to an error in the Client-ip header in remote_agent.php. A remote attacker can place the Log Path under the web root, make a specially crafted remote_agent.php request containing PHP code in a Client-ip header and execute arbitrary code with elevated privileges.

Mitigation

Update to version 1.1.28.

Vulnerable software versions

Cacti: 1.1.27

External links

http://github.com/Cacti/cacti/issues/1066

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

4) Information disclosure

EUVDB-ID: #VU9569

Risk: Low

CVSSv3.1: 4.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-16661

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote high-privileged attacker to obtain potentially sensitive information.

The vulnerability exists due to improper validation of user-supplied requests. A remote attacker can place the Log Path into a private directory, make a specially crafted clog.php?filename= request and read /etc/passwd.

Mitigation

Update to version 1.1.28.

Vulnerable software versions

Cacti: 1.1.27

External links

http://github.com/Cacti/cacti/issues/1066

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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