Security update for tigervnc SUSE Patch security@suse.de SUSE Security Team openSUSE-SU-2020:0087-1 Final 1 1 2020-01-21T15:12:09Z current 2020-01-21T15:12:09Z 2020-01-21T15:12:09Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for tigervnc This update for tigervnc fixes the following issues: - CVE-2019-15691: Fixed a use-after-return due to incorrect usage of stack memory in ZRLEDecoder (bsc#1159856). - CVE-2019-15692: Fixed a heap-based buffer overflow in CopyRectDecode (bsc#1160250). - CVE-2019-15693: Fixed a heap-based buffer overflow in TightDecoder::FilterGradient (bsc#1159858). - CVE-2019-15694: Fixed a heap-based buffer overflow, caused by improper error handling in processing MemOutStream (bsc#1160251). - CVE-2019-15695: Fixed a stack-based buffer overflow, which could be triggered from CMsgReader::readSetCursor (bsc#1159860). This update was imported from the SUSE:SLE-15-SP1:Update update project. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). openSUSE-2020-87 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/JT6NEMBSZCMVNVGETAKBKJSQLQK4EMXV/ E-Mail link for openSUSE-SU-2020:0087-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1159856 SUSE Bug 1159856 https://bugzilla.suse.com/1159858 SUSE Bug 1159858 https://bugzilla.suse.com/1159860 SUSE Bug 1159860 https://bugzilla.suse.com/1160250 SUSE Bug 1160250 https://bugzilla.suse.com/1160251 SUSE Bug 1160251 https://www.suse.com/security/cve/CVE-2019-15691/ SUSE CVE CVE-2019-15691 page https://www.suse.com/security/cve/CVE-2019-15692/ SUSE CVE CVE-2019-15692 page https://www.suse.com/security/cve/CVE-2019-15693/ SUSE CVE CVE-2019-15693 page https://www.suse.com/security/cve/CVE-2019-15694/ SUSE CVE CVE-2019-15694 page https://www.suse.com/security/cve/CVE-2019-15695/ SUSE CVE CVE-2019-15695 page openSUSE Leap 15.1 libXvnc-devel-1.9.0-lp151.4.3.1 libXvnc1-1.9.0-lp151.4.3.1 tigervnc-1.9.0-lp151.4.3.1 tigervnc-x11vnc-1.9.0-lp151.4.3.1 xorg-x11-Xvnc-1.9.0-lp151.4.3.1 xorg-x11-Xvnc-java-1.9.0-lp151.4.3.1 xorg-x11-Xvnc-module-1.9.0-lp151.4.3.1 xorg-x11-Xvnc-novnc-1.9.0-lp151.4.3.1 libXvnc-devel-1.9.0-lp151.4.3.1 as a component of openSUSE Leap 15.1 libXvnc1-1.9.0-lp151.4.3.1 as a component of openSUSE Leap 15.1 tigervnc-1.9.0-lp151.4.3.1 as a component of openSUSE Leap 15.1 tigervnc-x11vnc-1.9.0-lp151.4.3.1 as a component of openSUSE Leap 15.1 xorg-x11-Xvnc-1.9.0-lp151.4.3.1 as a component of openSUSE Leap 15.1 xorg-x11-Xvnc-java-1.9.0-lp151.4.3.1 as a component of openSUSE Leap 15.1 xorg-x11-Xvnc-module-1.9.0-lp151.4.3.1 as a component of openSUSE Leap 15.1 xorg-x11-Xvnc-novnc-1.9.0-lp151.4.3.1 as a component of openSUSE Leap 15.1 TigerVNC version prior to 1.10.1 is vulnerable to stack use-after-return, which occurs due to incorrect usage of stack memory in ZRLEDecoder. If decoding routine would throw an exception, ZRLEDecoder may try to access stack variable, which has been already freed during the process of stack unwinding. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity. CVE-2019-15691 openSUSE Leap 15.1:libXvnc-devel-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:libXvnc1-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:tigervnc-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:tigervnc-x11vnc-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-java-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-module-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-novnc-1.9.0-lp151.4.3.1 important 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/JT6NEMBSZCMVNVGETAKBKJSQLQK4EMXV/ https://www.suse.com/security/cve/CVE-2019-15691.html CVE-2019-15691 https://bugzilla.suse.com/1159856 SUSE Bug 1159856 TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow. Vulnerability could be triggered from CopyRectDecoder due to incorrect value checks. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity. CVE-2019-15692 openSUSE Leap 15.1:libXvnc-devel-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:libXvnc1-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:tigervnc-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:tigervnc-x11vnc-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-java-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-module-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-novnc-1.9.0-lp151.4.3.1 important 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/JT6NEMBSZCMVNVGETAKBKJSQLQK4EMXV/ https://www.suse.com/security/cve/CVE-2019-15692.html CVE-2019-15692 https://bugzilla.suse.com/1160250 SUSE Bug 1160250 TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow, which occurs in TightDecoder::FilterGradient. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity. CVE-2019-15693 openSUSE Leap 15.1:libXvnc-devel-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:libXvnc1-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:tigervnc-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:tigervnc-x11vnc-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-java-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-module-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-novnc-1.9.0-lp151.4.3.1 important 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/JT6NEMBSZCMVNVGETAKBKJSQLQK4EMXV/ https://www.suse.com/security/cve/CVE-2019-15693.html CVE-2019-15693 https://bugzilla.suse.com/1159858 SUSE Bug 1159858 TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow, which could be triggered from DecodeManager::decodeRect. Vulnerability occurs due to the signdness error in processing MemOutStream. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity. CVE-2019-15694 openSUSE Leap 15.1:libXvnc-devel-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:libXvnc1-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:tigervnc-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:tigervnc-x11vnc-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-java-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-module-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-novnc-1.9.0-lp151.4.3.1 important 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/JT6NEMBSZCMVNVGETAKBKJSQLQK4EMXV/ https://www.suse.com/security/cve/CVE-2019-15694.html CVE-2019-15694 https://bugzilla.suse.com/1160251 SUSE Bug 1160251 TigerVNC version prior to 1.10.1 is vulnerable to stack buffer overflow, which could be triggered from CMsgReader::readSetCursor. This vulnerability occurs due to insufficient sanitization of PixelFormat. Since remote attacker can choose offset from start of the buffer to start writing his values, exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity. CVE-2019-15695 openSUSE Leap 15.1:libXvnc-devel-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:libXvnc1-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:tigervnc-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:tigervnc-x11vnc-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-java-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-module-1.9.0-lp151.4.3.1 openSUSE Leap 15.1:xorg-x11-Xvnc-novnc-1.9.0-lp151.4.3.1 important 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/JT6NEMBSZCMVNVGETAKBKJSQLQK4EMXV/ https://www.suse.com/security/cve/CVE-2019-15695.html CVE-2019-15695 https://bugzilla.suse.com/1159860 SUSE Bug 1159860