openSUSE Security Update: Security update for LibVNCServer ______________________________________________________________________________ Announcement ID: openSUSE-SU-2018:0851-1 Rating: important References: #1017711 #1017712 #1081493 Cross-References: CVE-2016-9941 CVE-2016-9942 CVE-2018-7225 Affected Products: openSUSE Leap 42.3 ______________________________________________________________________________ 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). This update was imported from the SUSE:SLE-12:Update update project. Patch Instructions: To install this openSUSE 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: - openSUSE Leap 42.3: zypper in -t patch openSUSE-2018-326=1 Package List: - openSUSE Leap 42.3 (i586 x86_64): LibVNCServer-debugsource-0.9.9-16.3.1 LibVNCServer-devel-0.9.9-16.3.1 libvncclient0-0.9.9-16.3.1 libvncclient0-debuginfo-0.9.9-16.3.1 libvncserver0-0.9.9-16.3.1 libvncserver0-debuginfo-0.9.9-16.3.1 linuxvnc-0.9.9-16.3.1 linuxvnc-debuginfo-0.9.9-16.3.1 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