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debianDebianDEBIAN:DLA-777-1:E2A42
HistoryJan 03, 2017 - 3:51 p.m.

[SECURITY] [DLA 777-1] libvncserver security update

2017-01-0315:51:46
lists.debian.org
11

7.5 High

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

9.8 High

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

10 High

AI Score

Confidence

High

0.012 Low

EPSS

Percentile

85.6%

JSON

Package : libvncserver
Version : 0.9.9+dfsg-1+deb7u2
CVE IDs : CVE-2016-9941, CVE-2016-9942
Debian Bugs : #850007, #850008

It was discovered that there were two vulnerabilities in libvncserver, a
library to create/embed a VNC server:

  • CVE-2016-9941: Fix a heap-based buffer overflow that allows remote servers
    to cause a denial of service via a crafted FramebufferUpdate message
    containing a subrectangle outside of the drawing area.

  • CVE-2016-9942: Fix a heap-based buffer overflow that allow remote servers
    to cause a denial of service via a crafted FramebufferUpdate message with
    the "Ultra" type tile such that the LZO decompressed payload exceeds the
    size of the tile dimensions.

For Debian 7 "Wheezy", these issues have been fixed in libvncserver version
0.9.9+dfsg-1+deb7u2.

We recommend that you upgrade your libvncserver packages.

Regards,

  ,''`.
 : :'  :     Chris Lamb
 `. `'`      [email protected] / chris-lamb.co.uk
   `-
OSVersionArchitecturePackageVersionFilename
Debian7amd64linuxvnc< 0.9.9+dfsg-1+deb7u2linuxvnc_0.9.9+dfsg-1+deb7u2_amd64.deb
Debian7armellinuxvnc< 0.9.9+dfsg-1+deb7u2linuxvnc_0.9.9+dfsg-1+deb7u2_armel.deb
Debian7armhflibvncserver-dev< 0.9.9+dfsg-1+deb7u2libvncserver-dev_0.9.9+dfsg-1+deb7u2_armhf.deb
Debian7armellibvncserver-config< 0.9.9+dfsg-1+deb7u2libvncserver-config_0.9.9+dfsg-1+deb7u2_armel.deb
Debian7i386libvncserver-dev< 0.9.9+dfsg-1+deb7u2libvncserver-dev_0.9.9+dfsg-1+deb7u2_i386.deb
Debian7amd64libvncserver-dev< 0.9.9+dfsg-1+deb7u2libvncserver-dev_0.9.9+dfsg-1+deb7u2_amd64.deb
Debian7amd64libvncserver0< 0.9.9+dfsg-1+deb7u2libvncserver0_0.9.9+dfsg-1+deb7u2_amd64.deb
Debian7armhflibvncserver-config< 0.9.9+dfsg-1+deb7u2libvncserver-config_0.9.9+dfsg-1+deb7u2_armhf.deb
Debian7armhflibvncserver0-dbg< 0.9.9+dfsg-1+deb7u2libvncserver0-dbg_0.9.9+dfsg-1+deb7u2_armhf.deb
Debian7armellibvncserver0-dbg< 0.9.9+dfsg-1+deb7u2libvncserver0-dbg_0.9.9+dfsg-1+deb7u2_armel.deb
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7.5 High

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

9.8 High

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

10 High

AI Score

Confidence

High

0.012 Low

EPSS

Percentile

85.6%

JSON
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