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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2020.3678
Security update for xen
26 October 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: xen
Publisher: SUSE
Operating System: SUSE
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Increased Privileges -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-25604 CVE-2020-25603 CVE-2020-25601
CVE-2020-25600 CVE-2020-25597 CVE-2020-25596
CVE-2020-25595 CVE-2020-15567 CVE-2020-15565
CVE-2020-14364 CVE-2020-0543
Reference: ESB-2020.3437
ESB-2020.3259.2
ESB-2020.3251
Original Bulletin:
https://www.suse.com/support/update/announcement/2020/suse-su-202014521-1
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SUSE Security Update: Security update for xen
______________________________________________________________________________
Announcement ID: SUSE-SU-2020:14521-1
Rating: important
References: #1172205 #1173378 #1173380 #1175534 #1176343 #1176344
#1176345 #1176346 #1176347 #1176348 #1176350
Cross-References: CVE-2020-0543 CVE-2020-14364 CVE-2020-15565 CVE-2020-15567
CVE-2020-25595 CVE-2020-25596 CVE-2020-25597 CVE-2020-25600
CVE-2020-25601 CVE-2020-25603 CVE-2020-25604
Affected Products:
SUSE Linux Enterprise Server 11-SP4-LTSS
SUSE Linux Enterprise Debuginfo 11-SP4
______________________________________________________________________________
An update that fixes 11 vulnerabilities is now available.
Description:
This update for xen fixes the following issues:
o CVE-2020-0543: Fixed a leak of Special Register Buffer Data Sampling
(SRBDS) aka "CrossTalk" (bsc#1172205,XSA-320)
o CVE-2020-14364: Fixed an out-of-bounds read/write access while processing
usb packets (bsc#1175534).
o CVE-2020-15565: Fixed an issue cache write (bsc#1173378,XSA-321).
o CVE-2020-15567: Fixed an issue with non-atomic modification of live EPT PTE
(bsc#1173380,XSA-328)
o CVE-2020-25595: Fixed an issue where PCI passthrough code was reading back
hardware registers (bsc#1176344,XSA-337)
o CVE-2020-25596: Fixed a potential denial of service in x86 pv guest kernel
via SYSENTER (bsc#1176345,XSA-339)
o CVE-2020-25597: Fixed an issue where a valid event channels may not turn
invalid (bsc#1176346,XSA-338)
o CVE-2020-25600: Fixed out of bounds event channels available to 32-bit x86
domains (bsc#1176348,XSA-342)
o CVE-2020-25601: Fixed an issue due to lack of preemption in evtchn_reset()
/ evtchn_destroy() (bsc#1176350,XSA-344)
o CVE-2020-25603: Fixed an issue due to missing barriers when accessing/
allocating an event channel (bsc#1176347,XSA-340)
o CVE-2020-25604: Fixed a race condition when migrating timers between x86
HVM vCPU-s (bsc#1176343,XSA-336)
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-xen-14521=1
o SUSE Linux Enterprise Debuginfo 11-SP4:
zypper in -t patch dbgsp4-xen-14521=1
Package List:
o SUSE Linux Enterprise Server 11-SP4-LTSS (i586 x86_64):
xen-kmp-default-4.4.4_44_3.0.101_108.117-61.55.1
xen-libs-4.4.4_44-61.55.1
xen-tools-domU-4.4.4_44-61.55.1
o SUSE Linux Enterprise Server 11-SP4-LTSS (x86_64):
xen-4.4.4_44-61.55.1
xen-doc-html-4.4.4_44-61.55.1
xen-libs-32bit-4.4.4_44-61.55.1
xen-tools-4.4.4_44-61.55.1
o SUSE Linux Enterprise Server 11-SP4-LTSS (i586):
xen-kmp-pae-4.4.4_44_3.0.101_108.117-61.55.1
o SUSE Linux Enterprise Debuginfo 11-SP4 (i586 x86_64):
xen-debuginfo-4.4.4_44-61.55.1
xen-debugsource-4.4.4_44-61.55.1
References:
o https://www.suse.com/security/cve/CVE-2020-0543.html
o https://www.suse.com/security/cve/CVE-2020-14364.html
o https://www.suse.com/security/cve/CVE-2020-15565.html
o https://www.suse.com/security/cve/CVE-2020-15567.html
o https://www.suse.com/security/cve/CVE-2020-25595.html
o https://www.suse.com/security/cve/CVE-2020-25596.html
o https://www.suse.com/security/cve/CVE-2020-25597.html
o https://www.suse.com/security/cve/CVE-2020-25600.html
o https://www.suse.com/security/cve/CVE-2020-25601.html
o https://www.suse.com/security/cve/CVE-2020-25603.html
o https://www.suse.com/security/cve/CVE-2020-25604.html
o https://bugzilla.suse.com/1172205
o https://bugzilla.suse.com/1173378
o https://bugzilla.suse.com/1173380
o https://bugzilla.suse.com/1175534
o https://bugzilla.suse.com/1176343
o https://bugzilla.suse.com/1176344
o https://bugzilla.suse.com/1176345
o https://bugzilla.suse.com/1176346
o https://bugzilla.suse.com/1176347
o https://bugzilla.suse.com/1176348
o https://bugzilla.suse.com/1176350
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NOTE: This is only the original release of the security bulletin. It may
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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
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===========================================================================
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