CVE-2018-20020
First published: Wed Dec 19 2018(Updated: )
Last updated 24 July 2024
Credit: vulnerability@kaspersky.com vulnerability@kaspersky.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Libvnc Project Libvncserver | <0.9.12 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =18.10 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| debian/libvncserver | 0.9.13+dfsg-2+deb11u1 0.9.14+dfsg-1 | |
| debian/ssvnc | 1.0.29-5 1.0.29-6 1.0.29-6.1 | |
| debian/veyon | 4.5.3+repack1-1 4.7.5+repack1-1 4.7.5+repack1-1.2 |
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Reference Links
- https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-030-libvnc-heap-out-of-bound-write/
- 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://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
- https://launchpad.net/bugs/cve/CVE-2018-20020
- https://github.com/LibVNC/libvncserver/issues/250
- https://github.com/LibVNC/libvncserver/commit/09f2f3fb6a5a163e453e5c2979054670c39694bc
- https://github.com/LibVNC/libvncserver/commit/7b1ef0ffc4815cab9a96c7278394152bdc89dc4d
- https://security-tracker.debian.org/tracker/CVE-2018-20020
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20020
- https://nvd.nist.gov/vuln/detail/CVE-2018-20020
- https://ubuntu.com/security/CVE-2018-20020
Frequently Asked Questions
What is the severity of CVE-2018-20020?
The severity of CVE-2018-20020 is critical.
What is the vulnerability ID for LibVNC before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d?
The vulnerability ID for LibVNC before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d is CVE-2018-20020.
How can the heap out-of-bound write vulnerability in LibVNC before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d result in remote code execution?
The heap out-of-bound write vulnerability in LibVNC before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d can allow attackers to execute code remotely by exploiting the vulnerability in the VNC client code.
Which software versions are affected by CVE-2018-20020?
The affected software versions for CVE-2018-20020 include Ubuntu tightvnc 1:1.3.9-6.5+, Ubuntu libvncserver 0.9.11+dfsg-1ubuntu1.1, Ubuntu libvncserver 0.9.11+dfsg-1.1ubuntu0.1, Ubuntu libvncserver 0.9.11+dfsg-1.2, Ubuntu libvncserver 0.9.10+dfsg-3ubuntu0.16.04.3, Ubuntu libvncserver 0.9.9+dfsg-1ubuntu1.4, Ubuntu italc 1:3.0.3+dfsg1-3ubuntu0.1, Ubuntu italc 1:3.0.3+dfsg1-1+, Ubuntu italc 1:2.0.2+dfsg1-2+, Ubuntu italc 1:2.0.2+dfsg1-4ubuntu0.1, Ubuntu ssvnc 1.9.29-2+, Ubuntu ssvnc 1.0.29-2+, Debian libvncserver 0.9.11+dfsg-1.3+deb10u4, Debian libvncserver 0.9.11+dfsg-1.3+deb10u5, Debian libvncserver 0.9.13+dfsg-2+deb11u1, Debian libvncserver 0.9.14+dfsg-1, Debian ssvnc 1.0.29-4+deb10u1, Debian ssvnc 1.0.29-5, Debian ssvnc 1.0.29-6.
How can the vulnerability in LibVNC before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d be fixed?
To fix the vulnerability in LibVNC before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d, it is recommended to update to a version that includes the fix, such as commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d.
- collector/nvd-index
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- canonical/libvnc project libvncserver
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- version/canonical ubuntu linux/14.04
- version/canonical ubuntu linux/16.04
- version/canonical ubuntu linux/18.04
- version/canonical ubuntu linux/18.10
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