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CVE-2018-20748

Published: Jan 30, 2019Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-787
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
3.2%
Top 13.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-787

Affected Products

libvncserverlibvnc project
Mixed
Communications / messaging-chat
debian linuxdebian
On-premOS
Operating Systems / linux-distro
ubuntu linuxcanonical
On-premOS
Operating Systems / linux-distro
simatic itc1500 firmwaresiemens
EmbeddedFirmware
ICS / OT / IoT / industrial-network
simatic itc1500 pro firmwaresiemens
EmbeddedFirmware
ICS / OT / IoT / industrial-network
libvnc projectoss-projectCommunicationsaka libvncserver, libvnc-server, vnc server
debianoss-projectGBOperating Systemsaka debian gnu/linux
canonicalcommercialGBOperating Systemsaka canonical ltd.
siemenscommercialDEEnterprise Softwareaka siemens ag
and 9 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
cert-portal.siemens.com
https://github.com/LibVNC/libvncserver/commit/a64c3b37af9a6c8f8009d7516874b8d266b42bae
github.com
https://github.com/LibVNC/libvncserver/commit/c2c4b81e6cb3b485fb1ec7ba9e7defeb889f6ba7
github.com
and 45 more references View all →

Timeline

Published
Jan 30, 2019
Last Updated
Nov 21, 2024

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