CVE-2016-9942

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.

Score

CVSS 3.0 9.8 Critical

Status

Modified - cve@mitre.org

Published

2016-12-31

Last modified

2024-08-06

Weaknesses

CWE-119

Affected products

• Libvncserver (Libvncserver Project)

References

• http://www.debian.org/security/2017/dsa-3753
• http://www.securityfocus.com/bid/95170
• https://github.com/LibVNC/libvncserver/pull/137
• https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11
• https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
• https://security.gentoo.org/glsa/201702-24
• https://usn.ubuntu.com/4587-1/