CVE-2018-21247

2020-06-1700:00:00

ubuntu.com

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

0.002

Percentile

59.8%

JSON

An issue was discovered in LibVNCServer before 0.9.13. There is an
information leak (of uninitialized memory contents) in the
libvncclient/rfbproto.c ConnectToRFBRepeater function.

Bugs

<https://github.com/LibVNC/libvncserver/issues/253>

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlibvncserver< anyUNKNOWN
ubuntu20.04noarchlibvncserver< anyUNKNOWN
ubuntu16.04noarchlibvncserver< anyUNKNOWN
ubuntu20.04noarchveyon< anyUNKNOWN
ubuntu22.04noarchveyon< anyUNKNOWN
ubuntu24.04noarchveyon< anyUNKNOWN
ubuntu18.04noarchx11vnc< anyUNKNOWN
ubuntu20.04noarchx11vnc< anyUNKNOWN
ubuntu22.04noarchx11vnc< anyUNKNOWN
ubuntu24.04noarchx11vnc< anyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	libvncserver	< any	UNKNOWN
ubuntu	20.04	noarch	libvncserver	< any	UNKNOWN
ubuntu	16.04	noarch	libvncserver	< any	UNKNOWN
ubuntu	20.04	noarch	veyon	< any	UNKNOWN
ubuntu	22.04	noarch	veyon	< any	UNKNOWN
ubuntu	24.04	noarch	veyon	< any	UNKNOWN
ubuntu	18.04	noarch	x11vnc	< any	UNKNOWN
ubuntu	20.04	noarch	x11vnc	< any	UNKNOWN
ubuntu	22.04	noarch	x11vnc	< any	UNKNOWN
ubuntu	24.04	noarch	x11vnc	< any	UNKNOWN