CVE-2018-20023

MEDIUM

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

References

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://www.debian.org/security/2019/dsa-4383

Details

Source: MITRE

Published: 2018-12-19

Updated: 2019-08-09

Type: CWE-200

Risk Information

CVSS v2.0

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

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

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH