Ubuntu update for check-mk

1) Error Handling

EUVDB-ID: #VU65563

Risk: Low

CVSSv3.1: 3.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2017-14955

CWE-ID: CWE-388 - Error Handling

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to improper error handling, related to failed-login save feature. A remote attacker can gain access to sensitive information.

Mitigation

Update the affected package check-mk to the latest version.

Vulnerable software versions

Ubuntu: 18.04

check-mk-server (Ubuntu package): before 1.2.8p16-1ubuntu0.2

check-mk-multisite (Ubuntu package): before 1.2.8p16-1ubuntu0.2

check-mk-livestatus (Ubuntu package): before 1.2.8p16-1ubuntu0.2

CPE2.3

External links

http://ubuntu.com/security/notices/USN-5527-1

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. However, proof of concept for this vulnerability is available.

2) Cross-site scripting

EUVDB-ID: #VU65564

Risk: Medium

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-2017-9781

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

Exploit availability: No

Description

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

The vulnerability exists due to insufficient sanitization of user-supplied data passed via the "_username" parameter in webapi.py. 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 the affected package check-mk to the latest version.

Vulnerable software versions

Ubuntu: 18.04

check-mk-server (Ubuntu package): before 1.2.8p16-1ubuntu0.2

check-mk-multisite (Ubuntu package): before 1.2.8p16-1ubuntu0.2

check-mk-livestatus (Ubuntu package): before 1.2.8p16-1ubuntu0.2

CPE2.3

External links

http://ubuntu.com/security/notices/USN-5527-1

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.

3) Cross-site scripting

EUVDB-ID: #VU65565

Risk: Medium

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-2021-36563

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. A remote attacker can permanently inject 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 the affected package check-mk to the latest version.

Vulnerable software versions

Ubuntu: 18.04

check-mk-server (Ubuntu package): before 1.2.8p16-1ubuntu0.2

check-mk-multisite (Ubuntu package): before 1.2.8p16-1ubuntu0.2

check-mk-livestatus (Ubuntu package): before 1.2.8p16-1ubuntu0.2

CPE2.3

External links

http://ubuntu.com/security/notices/USN-5527-1

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.

4) Cross-site scripting

EUVDB-ID: #VU65566

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-2021-40906

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. 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 the affected package check-mk to the latest version.

Vulnerable software versions

Ubuntu: 18.04

check-mk-server (Ubuntu package): before 1.2.8p16-1ubuntu0.2

check-mk-multisite (Ubuntu package): before 1.2.8p16-1ubuntu0.2

check-mk-livestatus (Ubuntu package): before 1.2.8p16-1ubuntu0.2

CPE2.3

External links

http://ubuntu.com/security/notices/USN-5527-1

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.

5) Cross-site scripting

EUVDB-ID: #VU65567

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-2022-24565

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. 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 the affected package check-mk to the latest version.

Vulnerable software versions

Ubuntu: 18.04

check-mk-server (Ubuntu package): before 1.2.8p16-1ubuntu0.2

check-mk-multisite (Ubuntu package): before 1.2.8p16-1ubuntu0.2

check-mk-livestatus (Ubuntu package): before 1.2.8p16-1ubuntu0.2

CPE2.3

External links

http://ubuntu.com/security/notices/USN-5527-1

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.

Risk	Medium
Patch available	YES
Number of vulnerabilities	5
CVE-ID	CVE-2017-14955 CVE-2017-9781 CVE-2021-36563 CVE-2021-40906 CVE-2022-24565
CWE-ID	CWE-388 CWE-79
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software	Ubuntu Operating systems & Components / Operating system check-mk-server (Ubuntu package) Operating systems & Components / Operating system package or component check-mk-multisite (Ubuntu package) Operating systems & Components / Operating system package or component check-mk-livestatus (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.