CVE-2018-20021 Information

Description

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 Vector

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

Reference

https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-031-libvnc-infinite-loop/ https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html https://lists.debian.org/debian-lts-announce/2019/11/msg00033.html https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html https://security.gentoo.org/glsa/201908-05 https://security.gentoo.org/glsa/202006-06 https://usn.ubuntu.com/3877-1/ https://usn.ubuntu.com/4547-1/ https://usn.ubuntu.com/4547-2/ 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

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5