CVE-2017-18635
Aliases:GHSA-49rv-g7w5-m8xx
Advisory lineage Upstream: 0 Downstream: 8
Modified
Published: 25 Sept 2019, 22:59
Last modified:05 Aug 2024, 21:28
Vulnerability Summary
Overall Risk (default)
medium
36/100 CVSS Score
6.1 MEDIUM
v3.1 (nvd)
EPSS Score
6.49% LOW
6% probability -0.76%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected
Timeline
25 Sept 2019, 22:59
Published
Vulnerability first disclosed
05 Aug 2024, 21:28
Last Modified
Vulnerability information updated
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.
CVSS Metrics
- v3.1•MEDIUM•Score: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- v2.0•MEDIUM•Score: 4.3AV:N/AC:M/Au:N/C:N/I:P/A:N
EPSS Trends
Current EPSS score: 6.49%• Percentile: 91%
Techniques & Countermeasures
- CWE-79•Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Affected Systems
- canonical•ubuntu_linux
16.04
- debian•debian_linux
8.0 | 9.0
- novnc•novnc
< 0.6.2
- @novnc•novnc
< 0.6.2
- redhat•openstack
13
References (16)
- https://github.com/novnc/noVNC/issues/748
- https://github.com/novnc/noVNC/releases/tag/v0.6.2
- https://bugs.launchpad.net/horizon/+bug/1656435
- https://github.com/novnc/noVNC/commit/6048299a138e078aed210f163111698c8c526a13#diff-286f7dc7b881e942e97cd50c10898f03L534
- https://lists.debian.org/debian-lts-announce/2019/10/msg00004.html
- https://www.shielder.it/blog/exploiting-an-old-novnc-xss-cve-2017-18635-in-openstack/
- https://github.com/ShielderSec/cve-2017-18635
- https://access.redhat.com/errata/RHSA-2020:0754
- https://usn.ubuntu.com/4522-1/
- https://lists.debian.org/debian-lts-announce/2021/12/msg00024.html
- https://nvd.nist.gov/vuln/detail/CVE-2017-18635
- https://github.com/novnc/noVNC
- https://snyk.io/vuln/SNYK-JS-NOVNCNOVNC-469136
- https://usn.ubuntu.com/4522-1
- https://www.npmjs.com/advisories/1204
- https://www.shielder.it/blog/exploiting-an-old-novnc-xss-cve-2017-18635-in-openstack