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    CVE-2017-18635

    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.

    Published:Jan 12, 2019
    Last Modified:Nov 21, 2024
    EPS:Sep 25, 2019
    EPSS Score:0.04809
    CVSS Score:6.1

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Novnc
    Product
    Novnc
    Vendor
    Redhat
    Product
    Openstack
    Vendor
    Redhat
    Product
    Rhev Manager

    Exploits

    https://www.shielder.it/blog/exploiting-an-old-novnc-xss-cve-2017-18635-in-openstack/https://www.shielder.it/blog/exploiting-an-old-novnc-xss-cve-2017-18635-in-openstack/https://github.com/ShielderSec/CVE-2017-18635

    Related CVEs

    CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…
    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    https://access.redhat.com/errata/RHSA-2020:0754
    https://bugs.launchpad.net/horizon/+bug/1656435
    https://github.com/ShielderSec/cve-2017-18635
    https://github.com/novnc/noVNC/commit/6048299a138e078aed210f163111698c8c526a13#diff-286f7dc7b881e942e97cd50c10898f03L534
    https://github.com/novnc/noVNC/issues/748
    https://github.com/novnc/noVNC/releases/tag/v0.6.2
    https://lists.debian.org/debian-lts-announce/2019/10/msg00004.html
    https://lists.debian.org/debian-lts-announce/2021/12/msg00024.html
    https://usn.ubuntu.com/4522-1/
    https://www.shielder.it/blog/exploiting-an-old-novnc-xss-cve-2017-18635-in-openstack/
    https://access.redhat.com/errata/RHSA-2020:0754
    https://bugs.launchpad.net/horizon/+bug/1656435
    https://github.com/ShielderSec/cve-2017-18635
    https://github.com/novnc/noVNC/commit/6048299a138e078aed210f163111698c8c526a13#diff-286f7dc7b881e942e97cd50c10898f03L534
    https://github.com/novnc/noVNC/issues/748
    https://github.com/novnc/noVNC/releases/tag/v0.6.2
    https://lists.debian.org/debian-lts-announce/2019/10/msg00004.html
    https://lists.debian.org/debian-lts-announce/2021/12/msg00024.html
    https://usn.ubuntu.com/4522-1/
    https://www.shielder.it/blog/exploiting-an-old-novnc-xss-cve-2017-18635-in-openstack/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High