openSUSE Security Update: Security update for LibVNCServer
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Announcement ID: openSUSE-SU-2020:1025-1
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:
openSUSE Leap 15.2
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An update that fixes 10 vulnerabilities is now available.

Description:

This update for LibVNCServer fixes the following issues:

– security update
– 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

This update was imported from the SUSE:SLE-15: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 15.2:

zypper in -t patch openSUSE-2020-1025=1

Package List:

– openSUSE Leap 15.2 (i586 x86_64):

LibVNCServer-debugsource-0.9.10-lp152.9.8.1
LibVNCServer-devel-0.9.10-lp152.9.8.1
libvncclient0-0.9.10-lp152.9.8.1
libvncclient0-debuginfo-0.9.10-lp152.9.8.1
libvncserver0-0.9.10-lp152.9.8.1
libvncserver0-debuginfo-0.9.10-lp152.9.8.1

References:

https://www.suse.com/security/cve/CVE-2017-18922.html
https://www.suse.com/security/cve/CVE-2018-21247.html
https://www.suse.com/security/cve/CVE-2019-20839.html
https://www.suse.com/security/cve/CVE-2019-20840.html
https://www.suse.com/security/cve/CVE-2020-14397.html
https://www.suse.com/security/cve/CVE-2020-14398.html
https://www.suse.com/security/cve/CVE-2020-14399.html
https://www.suse.com/security/cve/CVE-2020-14400.html
https://www.suse.com/security/cve/CVE-2020-14401.html
https://www.suse.com/security/cve/CVE-2020-14402.html
https://bugzilla.suse.com/1173477
https://bugzilla.suse.com/1173691
https://bugzilla.suse.com/1173694
https://bugzilla.suse.com/1173700
https://bugzilla.suse.com/1173701
https://bugzilla.suse.com/1173743
https://bugzilla.suse.com/1173874
https://bugzilla.suse.com/1173875
https://bugzilla.suse.com/1173876
https://bugzilla.suse.com/1173880

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