Multiple vulnerabilities in Grafana

1) Cross-site scripting

EUVDB-ID: #VU28223

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-2020-13430

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 passed via the OpenTSDB datasource. 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 update from vendor's website.

Vulnerable software versions

Grafana: 1.0 - 6.7.3

External links

http://github.com/grafana/grafana/pull/24539
http://github.com/grafana/grafana/releases/tag/v7.0.0

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) Cleartext storage of sensitive information

EUVDB-ID: #VU28224

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12458

CWE-ID: CWE-312 - Cleartext Storage of Sensitive Information

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information on the target system.

The vulnerability exists due to the database directory "/var/lib/grafana" and database file "/var/lib/grafana/grafana.db" are world readable. A local user can gain access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Grafana: 6.7.0 - 6.7.3

External links

http://access.redhat.com/security/cve/CVE-2020-12458
http://bugzilla.redhat.com/show_bug.cgi?id=1827765
http://github.com/grafana/grafana/issues/8283
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CTQCKJZZYXMCSHJFZZ3YXEO5NUBANGZS/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WEBCIEVSYIDDCA7FTRS2IFUOYLIQU34A/
http://security.netapp.com/advisory/ntap-20200518-0001/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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