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AUSCERT External Security Bulletin Redistribution
ESB-2020.2469
Security update for LibVNCServer
21 July 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: LibVNCServer
Publisher: SUSE
Operating System: SUSE
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-14402 CVE-2020-14401 CVE-2020-14400
CVE-2020-14399 CVE-2020-14398 CVE-2020-14397
CVE-2019-20840 CVE-2019-20839 CVE-2018-21247
CVE-2017-18922
Reference: ESB-2020.2248
Original Bulletin:
https://www.suse.com/support/update/announcement/2020/suse-su-20201922-1
https://www.suse.com/support/update/announcement/2020/suse-su-202014424-1
Comment: This bulletin contains two (2) SUSE security advisories.
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SUSE Security Update: Security update for LibVNCServer
______________________________________________________________________________
Announcement ID: SUSE-SU-2020:1922-1
Rating: important
References: #1173477 #1173691 #1173694 #1173700 #1173701 #1173743
#1173874 #1173875 #1173876 #1173880
Cross-References: CVE-2017-18922 CVE-2018-21247 CVE-2019-20839 CVE-2019-20840
CVE-2020-14397 CVE-2020-14398 CVE-2020-14399 CVE-2020-14400
CVE-2020-14401 CVE-2020-14402
Affected Products:
SUSE Linux Enterprise Workstation Extension 15-SP2
SUSE Linux Enterprise Workstation Extension 15-SP1
SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP2
SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP1
______________________________________________________________________________
An update that fixes 10 vulnerabilities is now available.
Description:
This update for LibVNCServer fixes the following issues:
o security update
o added patches fix CVE-2018-21247 [bsc#1173874], uninitialized memory
contents are vulnerable to Information leak +
LibVNCServer-CVE-2018-21247.patch fix CVE-2019-20839 [bsc#1173875], buffer
overflow in ConnectClientToUnixSock() + LibVNCServer-CVE-2019-20839.patch
fix CVE-2019-20840 [bsc#1173876], unaligned accesses in hybiReadAndDecode
can lead to denial of service + LibVNCServer-CVE-2019-20840.patch fix
CVE-2020-14398 [bsc#1173880], improperly closed TCP connection causes an
infinite loop in libvncclient/sockets.c + LibVNCServer-CVE-2020-14398.patch
fix CVE-2020-14397 [bsc#1173700], NULL pointer dereference in libvncserver/
rfbregion.c + LibVNCServer-CVE-2020-14397.patch fix CVE-2020-14399 [bsc#
1173743], Byte-aligned data is accessed through uint32_t pointers in
libvncclient/rfbproto.c. + LibVNCServer-CVE-2020-14399.patch fix
CVE-2020-14400 [bsc#1173691], Byte-aligned data is accessed through
uint16_t pointers in libvncserver/translate.c. +
LibVNCServer-CVE-2020-14400.patch fix CVE-2020-14401 [bsc#1173694],
potential integer overflows in libvncserver/scale.c +
LibVNCServer-CVE-2020-14401.patch fix CVE-2020-14402 [bsc#1173701],
out-of-bounds access via encodings. +
LibVNCServer-CVE-2020-14402,14403,14404.patch fix CVE-2017-18922 [bsc#
1173477], preauth buffer overwrite
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 Workstation Extension 15-SP2:
zypper in -t patch SUSE-SLE-Product-WE-15-SP2-2020-1922=1
o SUSE Linux Enterprise Workstation Extension 15-SP1:
zypper in -t patch SUSE-SLE-Product-WE-15-SP1-2020-1922=1
o SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP2:
zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP2-2020-1922=
1
o SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP1:
zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP1-2020-1922=
1
Package List:
o SUSE Linux Enterprise Workstation Extension 15-SP2 (x86_64):
LibVNCServer-debugsource-0.9.10-4.22.1
libvncclient0-0.9.10-4.22.1
libvncclient0-debuginfo-0.9.10-4.22.1
libvncserver0-0.9.10-4.22.1
libvncserver0-debuginfo-0.9.10-4.22.1
o SUSE Linux Enterprise Workstation Extension 15-SP1 (x86_64):
LibVNCServer-debugsource-0.9.10-4.22.1
libvncclient0-0.9.10-4.22.1
libvncclient0-debuginfo-0.9.10-4.22.1
o SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP2 (aarch64
ppc64le s390x x86_64):
LibVNCServer-debugsource-0.9.10-4.22.1
libvncserver0-0.9.10-4.22.1
libvncserver0-debuginfo-0.9.10-4.22.1
o SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP1 (aarch64
ppc64le s390x x86_64):
LibVNCServer-debugsource-0.9.10-4.22.1
libvncserver0-0.9.10-4.22.1
libvncserver0-debuginfo-0.9.10-4.22.1
References:
o https://www.suse.com/security/cve/CVE-2017-18922.html
o https://www.suse.com/security/cve/CVE-2018-21247.html
o https://www.suse.com/security/cve/CVE-2019-20839.html
o https://www.suse.com/security/cve/CVE-2019-20840.html
o https://www.suse.com/security/cve/CVE-2020-14397.html
o https://www.suse.com/security/cve/CVE-2020-14398.html
o https://www.suse.com/security/cve/CVE-2020-14399.html
o https://www.suse.com/security/cve/CVE-2020-14400.html
o https://www.suse.com/security/cve/CVE-2020-14401.html
o https://www.suse.com/security/cve/CVE-2020-14402.html
o https://bugzilla.suse.com/1173477
o https://bugzilla.suse.com/1173691
o https://bugzilla.suse.com/1173694
o https://bugzilla.suse.com/1173700
o https://bugzilla.suse.com/1173701
o https://bugzilla.suse.com/1173743
o https://bugzilla.suse.com/1173874
o https://bugzilla.suse.com/1173875
o https://bugzilla.suse.com/1173876
o https://bugzilla.suse.com/1173880
- --------------------------------------------------------------------------------
SUSE Security Update: Security update for LibVNCServer
______________________________________________________________________________
Announcement ID: SUSE-SU-2020:14424-1
Rating: important
References: #1173691 #1173694 #1173700 #1173701 #1173743 #1173880
Cross-References: CVE-2020-14397 CVE-2020-14398 CVE-2020-14399 CVE-2020-14400
CVE-2020-14401 CVE-2020-14402
Affected Products:
SUSE Linux Enterprise Server 11-SP4-LTSS
SUSE Linux Enterprise Point of Sale 11-SP3
SUSE Linux Enterprise Debuginfo 11-SP4
SUSE Linux Enterprise Debuginfo 11-SP3
______________________________________________________________________________
An update that fixes 6 vulnerabilities is now available.
Description:
This update for LibVNCServer fixes the following issues:
o security update
o added patches fix CVE-2020-14398 [bsc#1173880], improperly closed TCP
connection causes an infinite loop in libvncclient/sockets.c +
LibVNCServer-CVE-2020-14398.patch fix CVE-2020-14397 [bsc#1173700], NULL
pointer dereference in libvncserver/rfbregion.c +
LibVNCServer-CVE-2020-14397.patch fix CVE-2020-14399 [bsc#1173743],
Byte-aligned data is accessed through uint32_t pointers in libvncclient/
rfbproto.c. + LibVNCServer-CVE-2020-14399.patch fix CVE-2020-14400 [bsc#
1173691], Byte-aligned data is accessed through uint16_t pointers in
libvncserver/translate.c. + LibVNCServer-CVE-2020-14400.patch fix
CVE-2020-14401 [bsc#1173694], potential integer overflows in libvncserver/
scale.c + LibVNCServer-CVE-2020-14401.patch fix CVE-2020-14402 [bsc#
1173701], out-of-bounds access via encodings. +
LibVNCServer-CVE-2020-14402,14403,14404.patch
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 11-SP4-LTSS:
zypper in -t patch slessp4-LibVNCServer-14424=1
o SUSE Linux Enterprise Point of Sale 11-SP3:
zypper in -t patch sleposp3-LibVNCServer-14424=1
o SUSE Linux Enterprise Debuginfo 11-SP4:
zypper in -t patch dbgsp4-LibVNCServer-14424=1
o SUSE Linux Enterprise Debuginfo 11-SP3:
zypper in -t patch dbgsp3-LibVNCServer-14424=1
Package List:
o SUSE Linux Enterprise Server 11-SP4-LTSS (i586 ppc64 s390x x86_64):
LibVNCServer-0.9.1-160.19.1
o SUSE Linux Enterprise Point of Sale 11-SP3 (i586):
LibVNCServer-0.9.1-160.19.1
o SUSE Linux Enterprise Debuginfo 11-SP4 (i586 ppc64 s390x x86_64):
LibVNCServer-debuginfo-0.9.1-160.19.1
LibVNCServer-debugsource-0.9.1-160.19.1
o SUSE Linux Enterprise Debuginfo 11-SP3 (i586 s390x x86_64):
LibVNCServer-debuginfo-0.9.1-160.19.1
LibVNCServer-debugsource-0.9.1-160.19.1
References:
o https://www.suse.com/security/cve/CVE-2020-14397.html
o https://www.suse.com/security/cve/CVE-2020-14398.html
o https://www.suse.com/security/cve/CVE-2020-14399.html
o https://www.suse.com/security/cve/CVE-2020-14400.html
o https://www.suse.com/security/cve/CVE-2020-14401.html
o https://www.suse.com/security/cve/CVE-2020-14402.html
o https://bugzilla.suse.com/1173691
o https://bugzilla.suse.com/1173694
o https://bugzilla.suse.com/1173700
o https://bugzilla.suse.com/1173701
o https://bugzilla.suse.com/1173743
o https://bugzilla.suse.com/1173880
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