VDB
CVE-2019-20840
CVE-2019-20840
PUBLISHED
An issue was discovered in LibVNCServer before 0.9.13. libvncserver/ws_decode.c can lead to a crash because of unaligned accesses in hybiReadAndDecode.
EPSS 2.93% · 86.7th percentile
Risk Scores
EPSS Score
2.93%
86.7th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:24.04:LTS | veyon | *, 4.7.5+repack1-1build2, 4.7.5+repack1-1ubuntu1 |
| Ubuntu:25.10 | veyon | 4.7.5+repack1-1ubuntu7, *, 0 |
| Ubuntu:16.04:LTS | libvncserver | 0.9.10+dfsg-3ubuntu0.16.04.2, 0.9.10+dfsg-3ubuntu0.16.04.4, 0.9.10+dfsg-3ubuntu0.16.04.3 |
| Ubuntu:20.04:LTS | veyon | 4.3.1+repack1-2build2, 4.2.5+repack1-1, 4.3.1+repack1-1 |
| Ubuntu:18.04:LTS | libvncserver | 0.9.11+dfsg-1ubuntu1.2, 0, 0.9.11+dfsg-1 |
| Ubuntu:14.04:LTS | x11vnc | 0.9.13-1.1, 0 |
| Ubuntu:22.04:LTS | veyon | 4.5.3+repack1-1build1, 0, * |
Timeline
- Jun 17, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 1, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Sep 4, 2022 EPSS Score
- Jan 8, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2019-20840 third-party-advisory
- https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13 third-party-advisory
- https://ubuntu.com/security/notices/USN-4434-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2019-20840 third-party-advisory