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gentooGentoo FoundationGLSA-201702-24
HistoryFeb 20, 2017 - 12:00 a.m.

LibVNCServer/LibVNCClient: Multiple vulnerabilities

2017-02-2000:00:00
Gentoo Foundation
security.gentoo.org
29

CVSS2

7.5

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

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.012

Percentile

85.5%

Background

LibVNCServer/LibVNCClient are cross-platform C libraries that allow you to easily implement VNC server or client functionality in your program.

Description

Multiple vulnerabilities have been discovered in LibVNCServer and LibVNCClient. Please review the CVE identifiers referenced below for details.

Impact

A remote attacker could entice a user to connect to a malicious VNC server or leverage Man-in-the-Middle attacks to cause the execution of arbitrary code with the privileges of the user running a VNC client linked against LibVNCClient.

Workaround

There is no known workaround at this time.

Resolution

All LibVNCServer/LibVNCClient users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-libs/libvncserver-0.9.11"
OSVersionArchitecturePackageVersionFilename
Gentooanyallnet-libs/libvncserver< 0.9.11UNKNOWN

CVSS2

7.5

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

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.012

Percentile

85.5%