check-mk: Stored XSS vulnerability using the internal server error handler
Published Dec 11, 2017
6.1
MEDIUMCVSS 3.0
EPSS 1.03%
Description
A cross site scripting (XSS) vulnerability exists in Check_MK versions 1.2.8x prior to 1.2.8p25 and 1.4.0x prior to 1.4.0p9, allowing an unauthenticated attacker to inject arbitrary HTML or JavaScript via the output_format parameter, and the username parameter of failed HTTP basic authentication attempts, which is returned unencoded in an internal server error page.
Affected products
-
- Version 1.2.8x prior to 1. 2.8p25StatusaffectedConstraints-
- Version 1.4.0x prior to 1.4.0p9StatusaffectedConstraints-
- Version
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.2.8
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
No data.
Red Hat Storage 3
check-mk
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Storage 3 | check-mk | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Gluster Storage 3 does not ship check-mk-multisite rpm, and is therefore not affected by this flaw.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
AV:N/AC:M/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.03% (0.01029) | 62.38th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.03% (0.01029) | 62.17th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.10% (0.00100) | 41.65th | v3 (v2023.03.01) |
| Jun 10, 2024 | 0.10% (0.00100) | 41.28th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00098) | 39.28th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.62% (0.00624) | 17.80th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
References (6)
- http://mathias-kettner.com/check_mk_werks.php?werk_id=7661 x_refsource_CONFIRMVendor Advisory
- https://access.redhat.com/security/cve/CVE-2017-11507 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1524949 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-11507
- https://www.cve.org/CVERecord?id=CVE-2017-11507
- https://www.tenable.com/security/research/tra-2017-20 x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://mathias-kettner.com/check_mk_werks.php?werk_id=7661 | x_refsource_CONFIRMVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2017-11507 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1524949 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-11507 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-11507 | ||
| https://www.tenable.com/security/research/tra-2017-20 | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.