Multiple vulnerabilities in Elastic Kibana

1) Cross-site scripting

EUVDB-ID: #VU18084

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-2019-7608

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

Install updates from vendor's website.

Vulnerable software versions

Kibana: 5.6.0 - 6.6.0

External links

http://discuss.elastic.co/t/elastic-stack-6-6-1-and-5-6-15-security-update/169077
http://www.elastic.co/community/security

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) Code Injection

EUVDB-ID: #VU18085

Risk: Medium

CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2019-7609

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: Yes

Description

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

The vulnerability exists due to improper input validation in the Timelion visualizer. A remote attacker with access to the Timelion application can send a specially crafted request and execute arbitrary javascript code on the target system with privileges of the Kibana process on the host system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Kibana: 5.6.0 - 6.6.0

External links

http://discuss.elastic.co/t/elastic-stack-6-6-1-and-5-6-15-security-update/169077
http://www.elastic.co/community/security

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?

Yes. This vulnerability is being exploited in the wild.

3) Code Injection

EUVDB-ID: #VU18083

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-7610

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation in the security audit logger, if the setting xpack.security.audit.enabled set to true. A remote attacker can send a specially crafted request and execute arbitrary javascript code on the target system with privileges of the Kibana process on the host system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Kibana: 5.6.0 - 6.6.0

External links

http://discuss.elastic.co/t/elastic-stack-6-6-1-and-5-6-15-security-update/169077
http://www.elastic.co/community/security

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.