CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
98.1%
Package : libvncserver
Version : 0.9.9+dfsg2-6.1+deb8u5
CVE ID : CVE-2018-15126 CVE-2018-20748 CVE-2018-20749 CVE-2018-20750
A vulnerability was found by Kaspersky Lab in libvncserver, a C library
to implement VNC server/client functionalities. In addition, some of the
vulnerabilities addressed in DLA 1617-1 were found to have incomplete
fixes, and have been addressed in this update.
CVE-2018-15126
An attacker can cause denial of service or remote code execution via
a heap use-after-free issue in the tightvnc-filetransfer extension.
CVE-2018-20748
CVE-2018-20749
CVE-2018-20750
Some of the out of bound heap write fixes for CVE-2018-20019 and
CVE-2018-15127 were incomplete. These CVEs address those issues.
For Debian 8 "Jessie", these problems have been fixed in version
0.9.9+dfsg2-6.1+deb8u5.
We recommend that you upgrade your libvncserver packages.
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
98.1%