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 craf...
CriticalCVSS 9.8
EPSS 3.8%
- Published
- Updated
- Exploit status
- No public exploit known
Description
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.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| debian/libvncserver(Debian:12) | < 0.9.11+dfsg-1 | 0.9.11+dfsg-1 |
| debian/libvncserver(Debian:13) | < 0.9.11+dfsg-1 | 0.9.11+dfsg-1 |
| debian/libvncserver(Debian:14) | < 0.9.11+dfsg-1 | 0.9.11+dfsg-1 |
| debian/veyon(Debian:12) | < 4.1.4+repack1-1 | 4.1.4+repack1-1 |
| debian/veyon(Debian:13) | < 4.1.4+repack1-1 | 4.1.4+repack1-1 |
| libvncserver project libvncserver | = 0.9.10 | No fix listed |
| alpine/libvncserver(Alpine:v3.10) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.11) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.12) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.13) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.14) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.15) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.16) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.17) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.18) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.19) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.2) | < 0.9.10-r2 | 0.9.10-r2 |
| alpine/libvncserver(Alpine:v3.20) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.21) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.22) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.23) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.24) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.3) | < 0.9.10-r2 | 0.9.10-r2 |
| alpine/libvncserver(Alpine:v3.4) | < 0.9.10-r2 | 0.9.10-r2 |
| alpine/libvncserver(Alpine:v3.5) | < 0.9.10-r2 | 0.9.10-r2 |
Show 4 more
| Product | Affected versions | Fixed in |
|---|---|---|
| alpine/libvncserver(Alpine:v3.6) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.7) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.8) | < 0.9.11-r0 | 0.9.11-r0 |
| alpine/libvncserver(Alpine:v3.9) | < 0.9.11-r0 | 0.9.11-r0 |
References
- Debian Security Tracker CVE-2016-9942 vendor-advisory
- DSA-3753 vendor-advisory
- 95170 vdb-entry
- github.com
- github.com
- [debian-lts-announce] 20191030 [SECURITY] [DLA 1979-1] italc security update mailing-list
- GLSA-201702-24 vendor-advisory
- USN-4587-1 vendor-advisory
- security.alpinelinux.org vendor-advisory
- bugs.debian.org issue-tracking