Home/CVE/LibVNC before commit c3115350eb8bb635d0fdb4dbbb0d0541f38ed19c contains a CWE-835: Infinite loop vulnerability in VNC cli
CVE

CVE-2018-20021

LibVNC before commit c3115350eb8bb635d0fdb4dbbb0d0541f38ed19c contains a CWE-835: Infinite loop vulnerability in VNC cli

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.

HIGH · CVSS 7.5 EPSS 0.02552
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
▤

Affected Products & Versions

3
libvnc project libvncserver< 0.9.12
canonical ubuntu linuxall versions
debian linuxall versions
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.0 · vulnerability@kaspersky.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD19 Dec 2018 · 04:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

10
suse-csafopenSUSE-SU-2024:10598-1
usnUSN-4587-1
usnUSN-4547-2
usnUSN-4547-1
suse-csafSUSE-SU-2019:0060-2
🔗

References & Sources

12
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-031-libvnc-infinite-loop/Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00017.htmlMailing ListThird Party Advisory
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
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