VDB
CVE-2017-18922
CVE-2017-18922
PUBLISHED
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.
EPSS 6.87% · 91.5th percentile
Risk Scores
EPSS Score
6.87%
91.5th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:20.04:LTS | libvncserver | 0.9.12+dfsg-6, *, 0.9.12+dfsg-7 |
| Ubuntu:24.04:LTS | veyon | 4.7.5+repack1-1build2, 4.7.5+repack1-1ubuntu3, 4.7.5+repack1-1ubuntu1 |
| Ubuntu:20.04:LTS | veyon | *, 0, 4.2.4+repack1-2 |
| Ubuntu:25.10 | veyon | 0, 4.9.7+repack1-1, 4.7.5+repack1-1ubuntu6 |
| Ubuntu:16.04:LTS | libvncserver | 0.9.10+dfsg-3, 0.9.10+dfsg-3build1, 0.9.10+dfsg-3ubuntu0.16.04.1 |
| Ubuntu:22.04:LTS | veyon | *, 0, 4.5.3+repack1-1build1 |
| Ubuntu:14.04:LTS | x11vnc | 0, 0.9.13-1.1 |
| Ubuntu:18.04:LTS | libvncserver | *, *, 0.9.11+dfsg-1 |
Timeline
- Jun 30, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Feb 28, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Sep 5, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
- Jan 8, 2023 EPSS Score
- Mar 11, 2023 EPSS Score
- May 13, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2017-18922 third-party-advisory
- https://www.openwall.com/lists/oss-security/2020/06/30/2 third-party-advisory
- https://ubuntu.com/security/notices/USN-4407-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2017-18922 third-party-advisory