CVE-2018-20021
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2018-20021
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-20021.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2018-20021
- Downstream
- Related
- Published
- 2018-12-19T16:29:00.420Z
- Modified
- 2025-11-14T08:29:46.548482Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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
- References
-
- 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://usn.ubuntu.com/4547-1/
- https://usn.ubuntu.com/4547-2/
- https://usn.ubuntu.com/4587-1/
- 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://security.gentoo.org/glsa/201908-05
- https://security.gentoo.org/glsa/202006-06
- https://usn.ubuntu.com/3877-1/
- https://www.debian.org/security/2019/dsa-4383
Affected packages
Git / github.com/libvnc/libvncserver
Affected ranges
- Type
- GIT
- Repo
- https://github.com/libvnc/libvncserver
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed