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:
- 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).
Non-security issue fixed:
- Make sure CN in generated certificate doesn't exceed 64 characters. (bnc#1041847) - Change with-vnc-key.sh to generate TLS certificate using current hostname to keep it short. (bsc#1041847) - 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:
- SUSE Linux Enterprise Server for SAP 12-SP1:
zypper in -t patch SUSE-SLE-SAP-12-SP1-2020-266=1
- SUSE Linux Enterprise Server 12-SP1-LTSS:
zypper in -t patch SUSE-SLE-SERVER-12-SP1-2020-266=1
Package List:
- SUSE Linux Enterprise Server for SAP 12-SP1 (x86_64):
