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AUSCERT External Security Bulletin Redistribution
ESB-2018.0883
SUSE Security Update: Security update for LibVNCServer
28 March 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: LibVNCServer
Publisher: SUSE
Operating System: SUSE
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2018-7225 CVE-2016-9942 CVE-2016-9941
Reference: ESB-2017.0083
ESB-2017.0082
ESB-2017.0047
Original Bulletin:
https://www.suse.com/support/update/announcement/2018/suse-su-20180830-1/
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SUSE Security Update: Security update for LibVNCServer
______________________________________________________________________________
Announcement ID: SUSE-SU-2018:0830-1
Rating: important
References: #1017711 #1017712 #1081493
Cross-References: CVE-2016-9941 CVE-2016-9942 CVE-2018-7225
Affected Products:
SUSE Linux Enterprise Software Development Kit 12-SP3
SUSE Linux Enterprise Software Development Kit 12-SP2
SUSE Linux Enterprise Server for Raspberry Pi 12-SP2
SUSE Linux Enterprise Server 12-SP3
SUSE Linux Enterprise Server 12-SP2
______________________________________________________________________________
An update that fixes three vulnerabilities is now available.
Description:
LibVNCServer was updated to fix two security issues.
These security issues were fixed:
- CVE-2018-7225: Missing input sanitization inside rfbserver.c
rfbProcessClientNormalMessage() (bsc#1081493).
- 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).
- 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).
Patch Instructions:
To install this SUSE Security Update use the SUSE recommended installation methods
like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:
- SUSE Linux Enterprise Software Development Kit 12-SP3:
zypper in -t patch SUSE-SLE-SDK-12-SP3-2018-554=1
- SUSE Linux Enterprise Software Development Kit 12-SP2:
zypper in -t patch SUSE-SLE-SDK-12-SP2-2018-554=1
- SUSE Linux Enterprise Server for Raspberry Pi 12-SP2:
zypper in -t patch SUSE-SLE-RPI-12-SP2-2018-554=1
- SUSE Linux Enterprise Server 12-SP3:
zypper in -t patch SUSE-SLE-SERVER-12-SP3-2018-554=1
- SUSE Linux Enterprise Server 12-SP2:
zypper in -t patch SUSE-SLE-SERVER-12-SP2-2018-554=1
Package List:
- SUSE Linux Enterprise Software Development Kit 12-SP3 (aarch64 ppc64le s390x x86_64):
LibVNCServer-debugsource-0.9.9-17.5.1
LibVNCServer-devel-0.9.9-17.5.1
- SUSE Linux Enterprise Software Development Kit 12-SP2 (aarch64 ppc64le s390x x86_64):
LibVNCServer-debugsource-0.9.9-17.5.1
LibVNCServer-devel-0.9.9-17.5.1
- SUSE Linux Enterprise Server for Raspberry Pi 12-SP2 (aarch64):
LibVNCServer-debugsource-0.9.9-17.5.1
libvncclient0-0.9.9-17.5.1
libvncclient0-debuginfo-0.9.9-17.5.1
libvncserver0-0.9.9-17.5.1
libvncserver0-debuginfo-0.9.9-17.5.1
- SUSE Linux Enterprise Server 12-SP3 (aarch64 ppc64le s390x x86_64):
LibVNCServer-debugsource-0.9.9-17.5.1
libvncclient0-0.9.9-17.5.1
libvncclient0-debuginfo-0.9.9-17.5.1
libvncserver0-0.9.9-17.5.1
libvncserver0-debuginfo-0.9.9-17.5.1
- SUSE Linux Enterprise Server 12-SP2 (aarch64 ppc64le s390x x86_64):
LibVNCServer-debugsource-0.9.9-17.5.1
libvncclient0-0.9.9-17.5.1
libvncclient0-debuginfo-0.9.9-17.5.1
libvncserver0-0.9.9-17.5.1
libvncserver0-debuginfo-0.9.9-17.5.1
References:
https://www.suse.com/security/cve/CVE-2016-9941.html
https://www.suse.com/security/cve/CVE-2016-9942.html
https://www.suse.com/security/cve/CVE-2018-7225.html
https://bugzilla.suse.com/1017711
https://bugzilla.suse.com/1017712
https://bugzilla.suse.com/1081493
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