Vulnerability Name:

CVE-2017-18635 (CCN-170236)

Assigned:2019-09-25
Published:2019-09-25
Updated:2022-04-06
Summary: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 v3 Severity:6.1 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
5.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:H/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): None
6.1 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
5.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:H/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
5.5 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-79
Vulnerability Consequences:Cross-Site Scripting
References:Source: MITRE
Type: CNA
CVE-2017-18635

Source: REDHAT
Type: Third Party Advisory
RHSA-2020:0754

Source: MISC
Type: Issue Tracking, Third Party Advisory
https://bugs.launchpad.net/horizon/+bug/1656435

Source: XF
Type: UNKNOWN
novnc-cve201718635-xss(170236)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/novnc/noVNC/commit/6048299a138e078aed210f163111698c8c526a13#diff-286f7dc7b881e942e97cd50c10898f03L534

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/novnc/noVNC/issues/748

Source: MISC
Type: Release Notes, Third Party Advisory
https://github.com/novnc/noVNC/releases/tag/v0.6.2

Source: MISC
Type: Third Party Advisory
https://github.com/ShielderSec/cve-2017-18635

Source: CCN
Type: Debian Mailing List, Sat, 5 Oct 2019 20:10:50 +0530
[DLA 1946-1] novnc security update

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20191005 [SECURITY] [DLA 1946-1] novnc security update

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20211228 [SECURITY] [DLA 2854-1] novnc security update

Source: CCN
Type: noVNC Web site
noVNC

Source: UBUNTU
Type: Third Party Advisory
USN-4522-1

Source: CCN
Type: IBM Security Bulletin 5695569 (PowerVC Standard)
PowerVC is impacted by an XSS vulnerability discovered in noVNC (CVE-2017-18635)

Source: MISC
Type: Exploit, Third Party Advisory
https://www.shielder.it/blog/exploiting-an-old-novnc-xss-cve-2017-18635-in-openstack/

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2017-18635

Vulnerable Configuration:Configuration 1:
  • cpe:/a:novnc:novnc:*:*:*:*:*:*:*:* (Version < 0.6.2)

    • Configuration 2:
  • cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*

    • Configuration 4:
  • cpe:/a:redhat:openstack:13:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:novnc:novnc:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.bionic:def:2017186350000000
    V
    		CVE-2017-18635 on Ubuntu 18.04 LTS (bionic) - medium.
    2019-09-25
    oval:com.ubuntu.xenial:def:2017186350000000
    V
    		CVE-2017-18635 on Ubuntu 16.04 LTS (xenial) - medium.
    2019-09-25
    BACK
    novnc novnc *
    debian debian linux 8.0
    debian debian linux 9.0
    canonical ubuntu linux 16.04
    redhat openstack 13
    novnc novnc -