Detections
Analytics

CVE-2018-20748

critical

Description

LibVNC before 0.9.12 contains multiple heap out-of-bounds write vulnerabilities in libvncclient/rfbproto.c. The fix for CVE-2018-20019 was incomplete.

References

https://usn.ubuntu.com/4587-1/

https://usn.ubuntu.com/4547-1/

https://usn.ubuntu.com/3877-1/

https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html

https://lists.debian.org/debian-lts-announce/2019/01/msg00029.html

https://github.com/LibVNC/libvncserver/issues/273

https://github.com/LibVNC/libvncserver/commit/e34bcbb759ca5bef85809967a268fdf214c1ad2c

https://github.com/LibVNC/libvncserver/commit/c5ba3fee85a7ecbbca1df5ffd46d32b92757bc2a

https://github.com/LibVNC/libvncserver/commit/c2c4b81e6cb3b485fb1ec7ba9e7defeb889f6ba7

https://github.com/LibVNC/libvncserver/commit/a64c3b37af9a6c8f8009d7516874b8d266b42bae

https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf

https://www.openwall.com/lists/oss-security/2018/12/10/8

Details

Source: Mitre, NVD

Published: 2019-01-30

Updated: 2024-11-21

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.10905