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CVE-2018-20023

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Date: 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

Language: C

Severity Score

Related Resources (12)

https://usn.ubuntu.com/3877-1/
https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html
https://usn.ubuntu.com/4547-1/
https://usn.ubuntu.com/4587-1/
https://nvd.nist.gov/vuln/detail/CVE-2018-20023
https://www.debian.org/security/2019/dsa-4383
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/
https://security.gentoo.org/glsa/201908-05
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
https://access.redhat.com/security/cve/CVE-2018-20023
https://www.mend.io/vulnerability-database/CVE-2018-20023

Severity Score

Weakness Type (CWE)

Improper Initialization

CWE-665

Information Leak / Disclosure

CWE-200

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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