CVE-2018-20019 — CRITICAL (9.8)

Q: What is CVE-2018-20019?

CVE-2018-20019 is a vulnerability with a CVSS score of 9.8 (CRITICAL). LibVNC before commit a83439b9fbe0f03c48eb94ed05729cb016f8b72f contains multiple heap out-of-bound write vulnerabilities in VNC client code that can result remote code execution

Q: How severe is CVE-2018-20019?

CVE-2018-20019 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2018-20019?

Check the references section above for vendor advisories and patch information. Affected products include: Libvnc Project Libvncserver, Canonical Ubuntu Linux, Debian Debian Linux, Siemens Simatic Itc1500 Firmware, Siemens Simatic Itc1500.

Vulnerability Description

LibVNC before commit a83439b9fbe0f03c48eb94ed05729cb016f8b72f contains multiple heap out-of-bound write vulnerabilities in VNC client code that can result remote code execution

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Libvnc Project	Libvncserver	< 0.9.12
Canonical	Ubuntu Linux	14.04
Debian	Debian Linux	8.0
Siemens	Simatic Itc1500 Firmware	>= 3.0.0.0, < 3.2.1.0
Siemens	Simatic Itc1500	-
Siemens	Simatic Itc1500 Pro Firmware	>= 3.0.0.0, < 3.2.1.0
Siemens	Simatic Itc1500 Pro	-
Siemens	Simatic Itc1900 Firmware	>= 3.0.0.0, < 3.2.1.0
Siemens	Simatic Itc1900	-
Siemens	Simatic Itc1900 Pro Firmware	>= 3.0.0.0, < 3.2.1.0
Siemens	Simatic Itc1900 Pro	-
Siemens	Simatic Itc2200 Firmware	>= 3.0.0.0, < 3.2.1.0
Siemens	Simatic Itc2200	-
Siemens	Simatic Itc2200 Pro Firmware	>= 3.0.0.0, < 3.2.1.0
Siemens	Simatic Itc2200 Pro	-

Related Weaknesses (CWE)

CWE-787

References

https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfPatchThird Party Advisory
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18Broken Link
https://lists.debian.org/debian-lts-announce/2018/12/msg00017.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.htmlMailing ListThird Party Advisory
https://security.gentoo.org/glsa/201908-05Third Party Advisory
https://usn.ubuntu.com/3877-1/Third Party Advisory
https://usn.ubuntu.com/4547-1/Third Party Advisory
https://usn.ubuntu.com/4587-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4383Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfPatchThird Party Advisory
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18Broken Link
https://lists.debian.org/debian-lts-announce/2018/12/msg00017.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.htmlMailing ListThird Party Advisory
https://security.gentoo.org/glsa/201908-05Third Party Advisory
https://usn.ubuntu.com/3877-1/Third Party Advisory

FAQ

What is CVE-2018-20019?

CVE-2018-20019 is a vulnerability with a CVSS score of 9.8 (CRITICAL). LibVNC before commit a83439b9fbe0f03c48eb94ed05729cb016f8b72f contains multiple heap out-of-bound write vulnerabilities in VNC client code that can result remote code execution

How severe is CVE-2018-20019?

CVE-2018-20019 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2018-20019?

Check the references section above for vendor advisories and patch information. Affected products include: Libvnc Project Libvncserver, Canonical Ubuntu Linux, Debian Debian Linux, Siemens Simatic Itc1500 Firmware, Siemens Simatic Itc1500.