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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libvncserver-devel | May 4, 2022 | Jun 30, 2020 |
| Centos_linux | — | Upgrade libvncserver-debuginfoUpgrade libvncserver-debugsourceUpgrade libvncserver-develUpgrade libvncserver | Aug 4, 2020 | Jun 30, 2020 |
| Debian | — | Upgrade libvncserver | Jul 30, 2024 | Jun 30, 2020 |
| Huawei Euleros 2_0_sp2 | — | Upgrade libvncserver | Feb 22, 2021 | Jun 30, 2020 |
| Huawei Euleros 2_0_sp3 | — | Upgrade libvncserver | Jan 20, 2021 | Jun 30, 2020 |
| Huawei Euleros 2_0_sp5 | — | Upgrade libvncserver | Feb 3, 2021 | Jun 30, 2020 |
| Huawei Euleros 2_0_sp8 | — | Upgrade libvncserver | Dec 15, 2020 | Jun 30, 2020 |
| Oracle_linux | — | Upgrade libvncserverUpgrade libvncserver-devel | Aug 5, 2020 | Feb 15, 2017 |
| Redhat_linux | — | Upgrade libvncserver-develUpgrade libvncserver-debugsourceUpgrade libvncserverUpgrade libvncserver-debuginfo | Aug 4, 2020 | Jun 30, 2020 |
| Suse | — | Upgrade libvncserver0Upgrade LibVNCServer-develUpgrade libvncclient0 | Jul 15, 2020 | Jun 30, 2020 |
| Ubuntu | — | Upgrade libvncserver1Upgrade libvncclient1 | Aug 5, 2020 | Jun 30, 2020 |
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