CVE-2018-20023 Information

Description

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

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Reference

https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-033-libvnc-memory-leak/ https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html https://security.gentoo.org/glsa/201908-05 https://usn.ubuntu.com/3877-1/ https://usn.ubuntu.com/4547-1/ https://usn.ubuntu.com/4587-1/ https://www.debian.org/security/2019/dsa-4383

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

7.5