CVE-2018-20749 Information

Description

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.

CVSS Vector

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

Reference

http://www.securityfocus.com/bid/106825 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://usn.ubuntu.com/3877-1/ https://usn.ubuntu.com/4547-1/ https://usn.ubuntu.com/4587-1/ https://www.openwall.com/lists/oss-security/2018/12/10/8

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8