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TI-2019-15008 Aliases CVE-2019-20788GHSA-7397-jpw5-q274

libvncclient/cursor.c in LibVNCServer through 0.9.12 has a HandleCursorShape integer…

Priority MEDIUM 47CWE-190Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-190 and the CVSS impact.

Summary

libvncclient/cursor.c in LibVNCServer through 0.9.12 has a HandleCursorShape integer overflow and heap-based buffer overflow via a large height or width value. NOTE: this may overlap CVE-2019-15690.

Why it matters now

EPSS 0.02497 84th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 3 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 20

CPEVersionsRoleVendor
cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:*up to 0.9.12VulnerableLibvnc Project
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*18.10VulnerableCanonical
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:siemens:simatic_itc1500_firmware:*:*:*:*:*:*:*:*3.0.0.0 to before 3.2.1.0VulnerableSiemens
cpe:2.3:h:siemens:simatic_itc1500:-:*:*:*:*:*:*:*not specified by NVDRunning onSiemens
  • cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:* Versions up to 0.9.12 Vulnerable ·Libvnc Project
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:siemens:simatic_itc1500_firmware:*:*:*:*:*:*:*:* Versions 3.0.0.0 to before 3.2.1.0 Vulnerable ·Siemens
  • cpe:2.3:h:siemens:simatic_itc1500:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Show 10 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:siemens:simatic_itc1500_pro_firmware:*:*:*:*:*:*:*:*3.0.0.0 to before 3.2.1.0VulnerableSiemens
cpe:2.3:h:siemens:simatic_itc1500_pro:-:*:*:*:*:*:*:*not specified by NVDRunning onSiemens
cpe:2.3:o:siemens:simatic_itc1900_firmware:*:*:*:*:*:*:*:*3.0.0.0 to before 3.2.1.0VulnerableSiemens
cpe:2.3:h:siemens:simatic_itc1900:-:*:*:*:*:*:*:*not specified by NVDRunning onSiemens
cpe:2.3:o:siemens:simatic_itc1900_pro_firmware:*:*:*:*:*:*:*:*3.0.0.0 to before 3.2.1.0VulnerableSiemens
cpe:2.3:h:siemens:simatic_itc1900_pro:-:*:*:*:*:*:*:*not specified by NVDRunning onSiemens
cpe:2.3:o:siemens:simatic_itc2200_firmware:*:*:*:*:*:*:*:*3.0.0.0 to before 3.2.1.0VulnerableSiemens
cpe:2.3:h:siemens:simatic_itc2200:-:*:*:*:*:*:*:*not specified by NVDRunning onSiemens
cpe:2.3:o:siemens:simatic_itc2200_pro_firmware:*:*:*:*:*:*:*:*3.0.0.0 to before 3.2.1.0VulnerableSiemens
cpe:2.3:h:siemens:simatic_itc2200_pro:-:*:*:*:*:*:*:*not specified by NVDRunning onSiemens
  • cpe:2.3:o:siemens:simatic_itc1500_pro_firmware:*:*:*:*:*:*:*:* Versions 3.0.0.0 to before 3.2.1.0 Vulnerable ·Siemens
  • cpe:2.3:h:siemens:simatic_itc1500_pro:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
  • cpe:2.3:o:siemens:simatic_itc1900_firmware:*:*:*:*:*:*:*:* Versions 3.0.0.0 to before 3.2.1.0 Vulnerable ·Siemens
  • cpe:2.3:h:siemens:simatic_itc1900:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
  • cpe:2.3:o:siemens:simatic_itc1900_pro_firmware:*:*:*:*:*:*:*:* Versions 3.0.0.0 to before 3.2.1.0 Vulnerable ·Siemens
  • cpe:2.3:h:siemens:simatic_itc1900_pro:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
  • cpe:2.3:o:siemens:simatic_itc2200_firmware:*:*:*:*:*:*:*:* Versions 3.0.0.0 to before 3.2.1.0 Vulnerable ·Siemens
  • cpe:2.3:h:siemens:simatic_itc2200:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
  • cpe:2.3:o:siemens:simatic_itc2200_pro_firmware:*:*:*:*:*:*:*:* Versions 3.0.0.0 to before 3.2.1.0 Vulnerable ·Siemens
  • cpe:2.3:h:siemens:simatic_itc2200_pro:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens

Remediation

Red Hat 3 advisories

  • RHSA-2020:0913 Released 2020-03-23 · Red Hat rating Important
    libvncserver security update
    • Red Hat Enterprise Linux Client (v. 7) libvncserver-0.9.9-14.el7_7
    • Red Hat Enterprise Linux Client Optional (v. 7) libvncserver-devel-0.9.9-14.el7_7
    • Red Hat Enterprise Linux Server (v. 7) libvncserver-0.9.9-14.el7_7
    • Red Hat Enterprise Linux Server Optional (v. 7) libvncserver-devel-0.9.9-14.el7_7
    • Red Hat Enterprise Linux Workstation (v. 7) libvncserver-0.9.9-14.el7_7
    • Red Hat Enterprise Linux Workstation Optional (v. 7) libvncserver-devel-0.9.9-14.el7_7
  • RHSA-2020:0920 Released 2020-03-23 · Red Hat rating Important
    libvncserver security update
    • Red Hat CodeReady Linux Builder (v. 8) libvncserver-0.9.11-9.el8_1.2, libvncserver-devel-0.9.11-9.el8_1.2
    • Red Hat Enterprise Linux AppStream (v. 8) libvncserver-0.9.11-9.el8_1.2
  • RHSA-2020:0921 Released 2020-03-23 · Red Hat rating Important
    libvncserver security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.0) libvncserver-0.9.11-9.el8_0.2

Vendor assessments

Red Hat

Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2020:0920
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2020:0920
Red Hat Enterprise Linux AppStream E4S (v. 8.0)Fixed RHSA-2020:0921
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2020:0913
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2020:0913
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2020:0913
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2020:0913
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2020:0913
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2020:0913
Not affected: 1 product
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-20788
  2. 2026-10-03 Alias added: GHSA-7397-jpw5-q274

References

Exploit 1

Patch 2

Advisory 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences