EulerOS 2.0 SP1 : libvncserver (EulerOS-SA-2017-1046)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote EulerOS host is missing multiple security updates.

Description :

According to the versions of the libvncserver package installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :

- Heap-based buffer overflow in ultra.c in LibVNCClient
in LibVNCServer before 0.9.11 allows remote servers to
cause a denial of service (application crash) or
possibly execute arbitrary code via a crafted
FramebufferUpdate message with the Ultra type tile,
such that the LZO payload decompressed length exceeds
what is specified by the tile
dimensions.(CVE-2016-9942,CVE-2016-9941)

Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

See also :

http://www.nessus.org/u?8ba91808

Solution :

Update the affected libvncserver packages.

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.9
(CVSS2#E:POC/RL:OF/RC:ND)
Public Exploit Available : true

Family: Huawei Local Security Checks

Nessus Plugin ID: 99891 ()

Bugtraq ID:

CVE ID: CVE-2016-9941
CVE-2016-9942

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