CVE-2017-18635
MEDIUM6.1EPSS 6.5%Cross-Site Scripting in @novnc/novnc
Published: 8/28/2020Modified: 4/28/2026
Description
An XSS vulnerability was discovered in noVNC before 0.6.2 in which the remote VNC server could inject arbitrary HTML into the noVNC web page via the messages propagated to the status field, such as the VNC server name.
Affected packages (4)
- Debian/novncfrom 0, < 1:1.0.0-1
- Debian/novncfrom 0, < 1:0.4+dfsg+1+20131010+gitf68af8af3d-4+deb8u1
- Debian/novncfrom 0, < 1:0.4+dfsg+1+20131010+gitf68af8af3d-6+deb9u1
- npm/@novnc/novncfrom 0, < 0.6.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
References (15)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2017-18635
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2017-18635
- PATCHhttps://github.com/novnc/noVNC
- WEBhttps://access.redhat.com/errata/RHSA-2020:0754
- WEBhttps://bugs.launchpad.net/horizon/+bug/1656435
- WEBhttps://github.com/novnc/noVNC/commit/6048299a138e078aed210f163111698c8c526a13#diff-286f7dc7b881e942e97cd50c10898f03L534
- WEBhttps://github.com/novnc/noVNC/issues/748
- WEBhttps://github.com/novnc/noVNC/releases/tag/v0.6.2
- WEBhttps://github.com/ShielderSec/cve-2017-18635
- WEBhttps://lists.debian.org/debian-lts-announce/2019/10/msg00004.html
- WEBhttps://lists.debian.org/debian-lts-announce/2021/12/msg00024.html
- WEBhttps://snyk.io/vuln/SNYK-JS-NOVNCNOVNC-469136
- WEBhttps://usn.ubuntu.com/4522-1
- WEBhttps://www.npmjs.com/advisories/1204
- WEBhttps://www.shielder.it/blog/exploiting-an-old-novnc-xss-cve-2017-18635-in-openstack