Heap-based buffer overflow in ultra.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message with the Ultra type tile, such that the LZO payload decompressed length exceeds what is specified by the tile dimensions.
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.0 Vector: (CVSS:3.0/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 |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade libvncserver | Aug 30, 2017 | Dec 31, 2016 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Dec 31, 2016 |
| Debian | — | Upgrade veyonUpgrade libvncserver | Jan 6, 2017 | Dec 31, 2016 |
| Freebsd | — | Upgrade libvncserver | Jan 10, 2017 | Jan 9, 2017 |
| Gentoo Linux | — | Upgrade net-libs/libvncserver. | Oct 30, 2017 | Dec 31, 2016 |
| Huawei Euleros 2_0_sp1 | — | Upgrade libvncserver | Nov 30, 2017 | Dec 31, 2016 |
| Huawei Euleros 2_0_sp2 | — | Upgrade libvncserver | Feb 22, 2021 | Dec 31, 2016 |
| Huawei Euleros 2_0_sp3 | — | Upgrade libvncserver | Jan 20, 2021 | Dec 31, 2016 |
| Huawei Euleros 2_0_sp5 | — | Upgrade libvncserver | Feb 3, 2021 | Dec 31, 2016 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Nov 14, 2016 |
| Suse | — | Upgrade libvncserver0Upgrade libXvnc1Upgrade libvncclient0Upgrade LibVNCServer-develUpgrade xorg-x11-xvncUpgrade LibVNCServerUpgrade tigervnc | Jan 12, 2017 | Dec 31, 2016 |
| Ubuntu | — | Upgrade italc-clientUpgrade libvncserver1Upgrade libitalccoreUpgrade libvncclient1Upgrade libvncserver0Upgrade italc-master | Jan 12, 2017 | Dec 31, 2016 |
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