CVE-2017-9781 — MEDIUM (6.1)

Vulnerability Description

A cross site scripting (XSS) vulnerability exists in Check_MK versions 1.4.0x prior to 1.4.0p6, allowing an unauthenticated remote attacker to inject arbitrary HTML or JavaScript via the _username parameter when attempting authentication to webapi.py, which is returned unencoded with content type text/html.

CVSS Score

6.1

MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Check Mk Project	Check Mk	1.4.0

Related Weaknesses (CWE)

CWE-79

References

http://git.mathias-kettner.de/git/?p=check_mk.git%3Ba=blob%3Bf=.werks/4757%3Bhb=
https://www.tenable.com/security/research/tra-2017-21ExploitThird Party Advisory
http://git.mathias-kettner.de/git/?p=check_mk.git%3Ba=blob%3Bf=.werks/4757%3Bhb=
https://www.tenable.com/security/research/tra-2017-21ExploitThird Party Advisory

FAQ

What is CVE-2017-9781?

CVE-2017-9781 is a vulnerability with a CVSS score of 6.1 (MEDIUM). A cross site scripting (XSS) vulnerability exists in Check_MK versions 1.4.0x prior to 1.4.0p6, allowing an unauthenticated remote attacker to inject arbitrary HTML or JavaScript via the _username par...

How severe is CVE-2017-9781?

CVE-2017-9781 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2017-9781?

Check the references section above for vendor advisories and patch information. Affected products include: Check Mk Project Check Mk.