Multiple vulnerabilities in Elastic Stack Kibana and Logstash



Risk Low
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2018-3818
CVE-2018-3821
CVE-2018-3819
CVE-2018-3817
CWE-ID CWE-79
CWE-601
CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Kibana
Web applications / Other software

Logstash
Server applications / Other server solutions

Vendor Elastic Stack

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Cross-site scripting

EUVDB-ID: #VU11468

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-3818

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 use the colored fields formatter, 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 5.6.6 or 6.1.2.

Vulnerable software versions

Kibana: 5.6.0 - 6.1.1

CPE2.3 External links

https://discuss.elastic.co/t/elastic-stack-6-1-2-and-5-6-6-security-update/115763


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) Cross-site scripting

EUVDB-ID: #VU11469

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-3821

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 in the tag cloud visualizationdue 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 to version 5.6.7 or 6.1.3.

Vulnerable software versions

Kibana: 5.6.0 - 6.1.2

CPE2.3 External links

https://discuss.elastic.co/t/elastic-stack-6-1-3-and-5-6-7-security-update/117683


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) Open redirect

EUVDB-ID: #VU11470

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-3819

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to conduct an open redirect attack.

The vulnerability exists in the login page due to an incomplete fix for another vulnerability identified as CVE-2017-11482. A remote attacker can trick the victim into following a specially crafted link, redirect the user to a malicious website and conduct further attacks or perform arbitrary actions.

Mitigation

Update to version 5.6.7 or 6.1.3.

Vulnerable software versions

Kibana: 5.6.0 - 6.1.2

CPE2.3 External links

https://discuss.elastic.co/t/elastic-stack-6-1-3-and-5-6-7-security-update/117683


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) Information disclosure

EUVDB-ID: #VU11472

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-3817

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The vulnerability exists due to the application inadvertently log sensitive information when logging warnings regarding deprecated settings. A remote attacker can gain access to arbitrary data.

Mitigation

Update to version 5.6.6 or 6.1.2.

Vulnerable software versions

Logstash: 5.6.0 - 6.1.1

CPE2.3 External links

https://discuss.elastic.co/t/elastic-stack-6-1-2-and-5-6-6-security-update/115763


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.



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