crítica
CVE-2018-20749
libvncserver: Heap out-of-bounds write in rfbserver.c in rfbProcessFileTransferReadBuffer() allows for potential code execution (Incomplete fix for CVE-2018-15127)
En la Trivy database desde, como mínimo, el 24 oct 2026, 07:11 UTCNo consta cuándo entró antes de ese build.
Severidad por fuente
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat7.5CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
La etiqueta propia de Trivy es CRITICAL. Crítica según NVD. Más baja según Red Hat (alta), Ubuntu (media).
Descripción
LibVNC before 0.9.12 contains a heap out-of-bounds write vulnerability in libvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete.
Paquetes afectados y versiones corregidas
| Fuente | Paquete | Corregido en |
|---|---|---|
| debian 11 | libvncserver | 0.9.11+dfsg-1.3 |
| debian 12 | libvncserver | 0.9.11+dfsg-1.3 |
| debian 13 | libvncserver | 0.9.11+dfsg-1.3 |
| debian 14 | libvncserver | 0.9.11+dfsg-1.3 |
| debian 8 | italc, libvncserver | 1:2.0.2+dfsg1-2+deb8u1 y 1 más |
| echo | libvncserver | 0.9.11+dfsg-1.3 |
| Red Hat | libvncserver, libvncserver-devel | sin corrección indicada |
| ubuntu 14.04 | libvncserver | 0.9.9+dfsg-1ubuntu1.4 |
| ubuntu 16.04 | italc, libvncserver | 1:2.0.2+dfsg1-4ubuntu0.1 y 1 más |
| ubuntu 16.04-ESM | italc, libvncserver | 1:2.0.2+dfsg1-4ubuntu0.1 y 1 más |
| ubuntu 18.04 | italc, libvncserver | 1:3.0.3+dfsg1-3ubuntu0.1 y 1 más |
| ubuntu 18.04-ESM | italc, libvncserver | 1:3.0.3+dfsg1-3ubuntu0.1 y 1 más |
Mostrar las 19 entradas de 13 fuentes
| Fuente | Paquete | Corregido en |
|---|---|---|
| debian 11 | libvncserver | 0.9.11+dfsg-1.3 |
| debian 12 | libvncserver | 0.9.11+dfsg-1.3 |
| debian 13 | libvncserver | 0.9.11+dfsg-1.3 |
| debian 14 | libvncserver | 0.9.11+dfsg-1.3 |
| debian 8 | italc | 1:2.0.2+dfsg1-2+deb8u1 |
| debian 8 | libvncserver | 0.9.9+dfsg2-6.1+deb8u5 |
| echo | libvncserver | 0.9.11+dfsg-1.3 |
| Red Hat | libvncserver | sin corrección indicada |
| Red Hat | libvncserver-devel | sin corrección indicada |
| ubuntu 14.04 | libvncserver | 0.9.9+dfsg-1ubuntu1.4 |
| ubuntu 16.04 | italc | 1:2.0.2+dfsg1-4ubuntu0.1 |
| ubuntu 16.04 | libvncserver | 0.9.10+dfsg-3ubuntu0.16.04.3 |
| ubuntu 16.04-ESM | italc | 1:2.0.2+dfsg1-4ubuntu0.1 |
| ubuntu 16.04-ESM | libvncserver | 0.9.10+dfsg-3ubuntu0.16.04.3 |
| ubuntu 18.04 | italc | 1:3.0.3+dfsg1-3ubuntu0.1 |
| ubuntu 18.04 | libvncserver | 0.9.11+dfsg-1ubuntu1.1 |
| ubuntu 18.04-ESM | italc | 1:3.0.3+dfsg1-3ubuntu0.1 |
| ubuntu 18.04-ESM | libvncserver | 0.9.11+dfsg-1ubuntu1.1 |
| ubuntu 18.10 | libvncserver | 0.9.11+dfsg-1.1ubuntu0.1 |
Referencias
- http://www.securityfocus.com/bid/106825
- https://access.redhat.com/security/cve/CVE-2018-20749
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
- https://github.com/LibVNC/libvncserver/commit/15bb719c03cc70f14c36a843dcb16ed69b405707
- https://github.com/LibVNC/libvncserver/issues/273
- https://lists.debian.org/debian-lts-announce/2019/01/msg00029.html
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://nvd.nist.gov/vuln/detail/CVE-2018-20749
Las 16 referencias
- https://ubuntu.com/security/notices/USN-3877-1
- https://ubuntu.com/security/notices/USN-4547-1
- https://ubuntu.com/security/notices/USN-4587-1
- https://usn.ubuntu.com/3877-1/
- https://usn.ubuntu.com/4547-1/
- https://usn.ubuntu.com/4587-1/
- https://www.cve.org/CVERecord?id=CVE-2018-20749
- https://www.openwall.com/lists/oss-security/2018/12/10/8