Heap-based buffer overflow in LibVNCServer - CVE-2019-15690

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Main Vulnerability Database Vulnerabilities #VU26343

Heap-based buffer overflow in LibVNCServer - CVE-2019-15690

Published: March 24, 2020


Vulnerability identifier: #VU26343
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-15690
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error. A remote attacker can trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

LibVNCServer
libvncserver (Red Hat package)
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
libvncserver1 (Ubuntu package)
libvncclient1 (Ubuntu package)
CentOS
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux for x86_64
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Opensuse
Ubuntu
SIMATIC ITC2200 PRO
SIMATIC ITC1500
SIMATIC ITC1500 PRO
SIMATIC ITC1900
SIMATIC ITC1900 PRO
SIMATIC ITC2200

How to mitigate CVE-2019-15690

Install updates from vendor's website.

LibVNCServer - update to 1.10.1
libvncserver (Red Hat package) - addressed in versions 0.9.9-14.el7_7, 0.9.11-9.el8_0.2, 0.9.11-9.el8_1.2
SIMATIC ITC2200 PRO - update to
libvncserver1 (Ubuntu package) - addressed in versions 0.9.10+dfsg-3ubuntu0.16.04.4, 0.9.11+dfsg-1.3ubuntu0.1, 0.9.11+dfsg-1ubuntu1.2, 0.9.12+dfsg-9ubuntu0.1
libvncclient1 (Ubuntu package) - addressed in versions 0.9.10+dfsg-3ubuntu0.16.04.4, 0.9.11+dfsg-1.3ubuntu0.1, 0.9.11+dfsg-1ubuntu1.2, 0.9.12+dfsg-9ubuntu0.1
SIMATIC ITC1500 - update to 3.2.1.0
SIMATIC ITC1500 PRO - update to 3.2.1.0
SIMATIC ITC1900 - update to 3.2.1.0
SIMATIC ITC1900 PRO - update to 3.2.1.0
SIMATIC ITC2200 - update to 3.2.1.0
SIMATIC ITC2200 PRO - update to 3.2.1.0

External References

Related Security Bulletins