Vulnerability DatabaseCVE-2018-20023
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CVE-2018-20023
December 19, 2018
LibVNC before 8b06f835e259652b0ff026898014fc7297ade858 contains CWE-665: Improper Initialization vulnerability in VNC Repeater 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
Related Resources (10)
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
https://access.redhat.com/security/cve/CVE-2018-20023
https://usn.ubuntu.com/4547-1/
https://usn.ubuntu.com/3877-1/
https://usn.ubuntu.com/4587-1/
https://security.gentoo.org/glsa/201908-05
https://www.debian.org/security/2019/dsa-4383
https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2018-20023
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-033-libvnc-memory-leak/
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
CVSS v2
Base Score:
5
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Weakness Type (CWE)
Improper Initialization
CWE-665
EPSS
Base Score:
0.86