SUSE Security Update: Security update for LibVNCServer
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Announcement ID: SUSE-SU-2017:0104-1
Rating: important
References: #1017711 #1017712
Cross-References: CVE-2016-9941 CVE-2016-9942
Affected Products:
SUSE Linux Enterprise Software Development Kit 11-SP4
SUSE Linux Enterprise Server 11-SP4
SUSE Linux Enterprise Debuginfo 11-SP4
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An update that fixes two vulnerabilities is now available.

Description:

LibVNCServer was updated to fix two security issues.

These security issues were fixed:

– CVE-2016-9941: Heap-based buffer overflow in rfbproto.c allowed remote
servers to cause a denial of service (application crash) or possibly
execute arbitrary code via a crafted FramebufferUpdate message
containing a subrectangle outside of the client drawing area
(bsc#1017711)
– CVE-2016-9942: Heap-based buffer overflow in ultra.c allowed 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 (bsc#1017712)

Patch Instructions:

To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product:

– SUSE Linux Enterprise Software Development Kit 11-SP4:

zypper in -t patch sdksp4-LibVNCServer-12932=1

– SUSE Linux Enterprise Server 11-SP4:

zypper in -t patch slessp4-LibVNCServer-12932=1

– SUSE Linux Enterprise Debuginfo 11-SP4:

zypper in -t patch dbgsp4-LibVNCServer-12932=1

To bring your system up-to-date, use “zypper patch”.

Package List:

– SUSE Linux Enterprise Software Development Kit 11-SP4 (i586 ia64 ppc64 s390x x86_64):

LibVNCServer-devel-0.9.1-159.1

– SUSE Linux Enterprise Server 11-SP4 (i586 ia64 ppc64 s390x x86_64):

LibVNCServer-0.9.1-159.1

– SUSE Linux Enterprise Debuginfo 11-SP4 (i586 ia64 ppc64 s390x x86_64):

LibVNCServer-debuginfo-0.9.1-159.1
LibVNCServer-debugsource-0.9.1-159.1

References:

https://www.suse.com/security/cve/CVE-2016-9941.html
https://www.suse.com/security/cve/CVE-2016-9942.html
https://bugzilla.suse.com/1017711
https://bugzilla.suse.com/1017712

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