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CVE-2018-20022

libvncserver: Improper initialization in VNC client code allows for information disclosure

LibVNC before 2f5b2ad1c6c99b1ac6482c95844a84d66bb52838 contains multiple weaknesses CWE-665: Improper Initialization vulnerability in VNC client code that allows attacker to read stack memory and can be abuse for information disclosure. Combined with another vulnerability, it can be used to leak stack memory layout and in bypassing ASLR

CVSS 3.0 · 7.5 High EPSS 2.9% KEV · Not listed
Vendors
Canonical Debian Libvnc Project
Products
Ubuntu Linux Debian Linux Libvncserver
CVE-2018-20021

libvncserver: Infinite loop in VNC client code allows for denial of service

LibVNC before commit c3115350eb8bb635d0fdb4dbbb0d0541f38ed19c contains a CWE-835: Infinite loop vulnerability in VNC client code. Vulnerability allows attacker to consume excessive amount of resources like CPU and RAM

CVSS 3.0 · 7.5 High EPSS 3.4% KEV · Not listed
Vendors
Canonical Debian Libvnc Project
Products
Ubuntu Linux Debian Linux Libvncserver
CVE-2018-20020

libvncserver: Heap out-of-bound write inside structure in VNC client code allows for potential code execution

LibVNC before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d contains heap out-of-bound write vulnerability inside structure in VNC client code that can result remote code execution

CVSS 3.0 · 9.8 Critical EPSS 8.8% KEV · Not listed
Vendors
Canonical Debian Libvnc Project
Products
Ubuntu Linux Debian Linux Libvncserver
CVE-2018-20019

libvncserver: Multiple heap out-of-bound writes in VNC client code

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

CVSS 3.1 · 9.8 Critical EPSS 9.6% KEV · Not listed
Vendors
Canonical Debian Libvnc Project and 1 more
Products
Ubuntu Linux Debian Linux Libvncserver and 12 more
CVE-2018-15127

libvncserver: Heap out-of-bounds write in rfbserver.c in rfbProcessFileTransferReadBuffer() allows for potential code execution

LibVNC before commit 502821828ed00b4a2c4bef90683d0fd88ce495de contains heap out-of-bound write vulnerability in server code of file transfer extension that can result remote code execution

CVSS 3.0 · 9.8 Critical EPSS 15.1% KEV · Not listed
Vendors
Canonical Debian Libvnc Project and 1 more
Products
Ubuntu Linux Debian Linux Libvncserver and 7 more
CVE-2018-15126

libvncserver: Use-after-free in file transfer extension allows for potential code execution

LibVNC before commit 73cb96fec028a576a5a24417b57723b55854ad7b contains heap use-after-free vulnerability in server code of file transfer extension that can result remote code execution

CVSS 3.0 · 9.8 Critical EPSS 11.8% KEV · Not listed
Vendors
Canonical Debian Libvnc Project
Products
Ubuntu Linux Debian Linux Libvncserver