Heap Out-of-Bounds Write Vulnerabilities in LibVNC by LibVNC
CVE-2018-20748

9.8CRITICAL

Key Information:

Vendor

Libvnc Project

Status
Libvncserver
Vendor
CVE Published:
30 January 2019

What is CVE-2018-20748?

LibVNC before version 0.9.12 contains multiple flaws related to heap out-of-bounds writes in the libvncclient component, specifically in the rfbproto.c file. The updates intended to address the vulnerabilities associated with CVE-2018-20019 were insufficient, leaving the systems susceptible to exploitation. Users of LibVNC are advised to update to the latest version to mitigate these vulnerabilities.

References

https://lists.debian.org/debian-lts-announce/2019/01/msg0...
mailing-listx_refsource_MLIST
https://github.com/LibVNC/libvncserver/commit/a64c3b37af9...
x_refsource_MISC
https://github.com/LibVNC/libvncserver/commit/e34bcbb759c...
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.