It was discovered that websockets.c in LibVNCServer prior to 0.9.12 did not properly decode certain WebSocket frames. A malicious attacker could exploit this by sending specially crafted WebSocket frames to a server, causing a heap-based buffer overflow.
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | alma-upgrade-libvncserver-devel | May 4, 2022 | Jun 30, 2020 | |
| Centos_linux | — | centos-upgrade-libvncservercentos-upgrade-libvncserver-debuginfocentos-upgrade-libvncserver-debugsourcecentos-upgrade-libvncserver-devel | Aug 4, 2020 | Jun 30, 2020 |
| Debian | debian-upgrade-libvncserver | Jul 30, 2024 | Jun 30, 2020 | |
| Huawei Euleros 2_0_sp2 | huawei-euleros-2_0_sp2-upgrade-libvncserver | Feb 22, 2021 | Jun 30, 2020 | |
| Huawei Euleros 2_0_sp3 | huawei-euleros-2_0_sp3-upgrade-libvncserver | Jan 20, 2021 | Jun 30, 2020 | |
| Huawei Euleros 2_0_sp5 | huawei-euleros-2_0_sp5-upgrade-libvncserver | Feb 3, 2021 | Jun 30, 2020 | |
| Huawei Euleros 2_0_sp8 | huawei-euleros-2_0_sp8-upgrade-libvncserver | Dec 15, 2020 | Jun 30, 2020 | |
| Oracle_linux | — | oracle-linux-upgrade-libvncserveroracle-linux-upgrade-libvncserver-devel | Aug 5, 2020 | Feb 15, 2017 |
| Redhat_linux | redhat-upgrade-libvncserverredhat-upgrade-libvncserver-debuginforedhat-upgrade-libvncserver-debugsourceredhat-upgrade-libvncserver-devel | Aug 4, 2020 | Jun 30, 2020 | |
| Suse | — | suse-upgrade-libvncclient0suse-upgrade-libvncserver-develsuse-upgrade-libvncserver0 | Jul 15, 2020 | Jun 30, 2020 |
| Ubuntu | ubuntu-upgrade-libvncclient1ubuntu-upgrade-libvncserver1 | Aug 5, 2020 | Jun 30, 2020 |
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