CVEvulnerability
CVE-2018-20023
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2018-12-19
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 7.5 HIGH — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-665
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
Affected configurations
• libvnc project libvncserver (< 0.9.12)
• debian debian linux 8.0
• debian debian linux 9.0
• canonical ubuntu linux 14.04
• canonical ubuntu linux 16.04
• canonical ubuntu linux 18.04
• canonical ubuntu linux 18.10
Related
Weakness · CWE (1)
- CWE-665 Improper Initialization weakness
References
- https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-033-libvnc-memory-leak/ Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html lists.debian.org
- https://security.gentoo.org/glsa/201908-05 security.gentoo.org
- https://usn.ubuntu.com/3877-1/ Third Party Advisory
- https://usn.ubuntu.com/4547-1/ usn.ubuntu.com
- https://usn.ubuntu.com/4587-1/ usn.ubuntu.com
- https://www.debian.org/security/2019/dsa-4383 Third Party Advisory
- https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-033-libvnc-memory-leak/ Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html lists.debian.org
- https://security.gentoo.org/glsa/201908-05 security.gentoo.org
- https://usn.ubuntu.com/3877-1/ Third Party Advisory
- https://usn.ubuntu.com/4547-1/ usn.ubuntu.com
- https://usn.ubuntu.com/4587-1/ usn.ubuntu.com
- https://www.debian.org/security/2019/dsa-4383 Third Party Advisory