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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.0362 SUSE-SU-2020:0266-1 Security update for tigervnc 31 January 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: tigervnc Publisher: SUSE Operating System: SUSE Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-15695 CVE-2019-15694 CVE-2019-15693 CVE-2019-15692 CVE-2019-15691 Reference: ESB-2020.0236 ESB-2020.0176 Original Bulletin: https://www.suse.com/support/update/announcement/2020/suse-su-20200266-1.html - --------------------------BEGIN INCLUDED TEXT-------------------- SUSE Security Update: Security update for tigervnc ______________________________________________________________________________ Announcement ID: SUSE-SU-2020:0266-1 Rating: important References: #1041847 #1053373 #1159856 #1159858 #1159860 #1160250 #1160251 #1160937 Cross-References: CVE-2019-15691 CVE-2019-15692 CVE-2019-15693 CVE-2019-15694 CVE-2019-15695 Affected Products: SUSE Linux Enterprise Server for SAP 12-SP1 SUSE Linux Enterprise Server 12-SP1-LTSS ______________________________________________________________________________ An update that solves 5 vulnerabilities and has three fixes is now available. Description: This update for tigervnc provides the following fixes: Security issues fixed: o CVE-2019-15691: Fixed a use-after-return due to incorrect usage of stack memory in ZRLEDecoder (bsc#1159856). o CVE-2019-15692: Fixed a heap-based buffer overflow in CopyRectDecode (bsc# 1160250). o CVE-2019-15693: Fixed a heap-based buffer overflow in TightDecoder::FilterGradient (bsc#1159858). o CVE-2019-15694: Fixed a heap-based buffer overflow, caused by improper error handling in processing MemOutStream (bsc#1160251). o CVE-2019-15695: Fixed a stack-based buffer overflow, which could be triggered from CMsgReader::readSetCursor (bsc#1159860). Non-security issue fixed: o Make sure CN in generated certificate doesn't exceed 64 characters. (bnc# 1041847) o Change with-vnc-key.sh to generate TLS certificate using current hostname to keep it short. (bsc#1041847) o Disable MIT-SHM extension when running under user "vnc". (bsc#1053373) 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: o SUSE Linux Enterprise Server for SAP 12-SP1: zypper in -t patch SUSE-SLE-SAP-12-SP1-2020-266=1 o SUSE Linux Enterprise Server 12-SP1-LTSS: zypper in -t patch SUSE-SLE-SERVER-12-SP1-2020-266=1 Package List: o SUSE Linux Enterprise Server for SAP 12-SP1 (x86_64): tigervnc-1.4.3-25.11.1 tigervnc-debuginfo-1.4.3-25.11.1 tigervnc-debugsource-1.4.3-25.11.1 xorg-x11-Xvnc-1.4.3-25.11.1 xorg-x11-Xvnc-debuginfo-1.4.3-25.11.1 o SUSE Linux Enterprise Server 12-SP1-LTSS (ppc64le s390x x86_64): tigervnc-1.4.3-25.11.1 tigervnc-debuginfo-1.4.3-25.11.1 tigervnc-debugsource-1.4.3-25.11.1 xorg-x11-Xvnc-1.4.3-25.11.1 xorg-x11-Xvnc-debuginfo-1.4.3-25.11.1 References: o https://www.suse.com/security/cve/CVE-2019-15691.html o https://www.suse.com/security/cve/CVE-2019-15692.html o https://www.suse.com/security/cve/CVE-2019-15693.html o https://www.suse.com/security/cve/CVE-2019-15694.html o https://www.suse.com/security/cve/CVE-2019-15695.html o https://bugzilla.suse.com/1041847 o https://bugzilla.suse.com/1053373 o https://bugzilla.suse.com/1159856 o https://bugzilla.suse.com/1159858 o https://bugzilla.suse.com/1159860 o https://bugzilla.suse.com/1160250 o https://bugzilla.suse.com/1160251 o https://bugzilla.suse.com/1160937 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXjOCXmaOgq3Tt24GAQiCgRAAuWBKyEPPEBQmf1Ei2sYhdyxvq/N95cgw H63JHFbNdaFFwRNdMdTujWcj6TcoGeMW74arujQfflmaLpwwEyKhwQSH5V3cN6aC 1Vne4RPi1uhzzUNCxvXjobvfHPEPocun4RNMa7myUyvtG0XByeUfmtzuhqpHJ/sx RCKkNU4a8qeNoOorPryyKh+ihWbJYNihbgM2alcp83ixfan0m08tticrOCFePap9 cK3qTd/wEtQLVy5AjwCJJGByOaQKv9g7nOwNOvZl4+7Ruihm2w3+7LoUTWuPs8Gj KSiUIiLM+VMPohO7y0XWzKPOwFQNCiQ0r5wYzFF8YDlM+iZVWqgzjbnHHKq9QREQ m7Rcnk1EPaFQMeHSsG/qd5sZ7MjxzSZAD/JYHXTCY9rTpJg86KeKaTGlDdFjX9N1 ZlIyIfBsh7QPUZ61UJ+0h9dI35GnwsU3ZO9491YgriZaBEoAiAMOKSaBSmubCVDz yRngaQFIcsoaOw5/Qa/6ejW47353wqJWzB24nuIr4XlQ0zuebeeqXwKA61AdoiB/ G07kbk8FG/X20P+cxNKrKErXlCmjnmPg7mCIMjwMCJQJvNwL2ltEJzPs/7uvAg+m 9c0aeKwO75wbKM7cRl5IvhAtdRs6u+pQWsOJ7Z3Vs//2MIOPvSn2T3wuaUAI9rRf pvDXsmu0/W8= =Pnjh -----END PGP SIGNATURE-----