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AUSCERT External Security Bulletin Redistribution
ESB-2018.3230
SUSE Security Update: Security update for the Linux Kernel
(Live Patch 38 for SLE 12)
23 October 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: Linux Kernel
Publisher: SUSE
Operating System: SUSE
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-14633 CVE-2018-5390
Reference: ASB-2018.0222
ASB-2018.0221
ESB-2018.3140
ESB-2018.3136
ESB-2018.3130
ESB-2018.3044
ESB-2018.2959
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SUSE Security Update: Security update for the Linux Kernel (Live Patch 38 for SLE 12)
______________________________________________________________________________
Announcement ID: SUSE-SU-2018:3265-1
Rating: important
References: #1102682 #1107832
Cross-References: CVE-2018-14633 CVE-2018-5390
Affected Products:
SUSE Linux Enterprise Server 12-LTSS
______________________________________________________________________________
An update that fixes two vulnerabilities is now available.
Description:
This update for the Linux Kernel 3.12.61-52_146 fixes several issues.
The following security issues were fixed:
- CVE-2018-14633: A security flaw was found in the
chap_server_compute_md5() function in the ISCSI target code in the Linux
kernel in a way an authentication request from an ISCSI initiator is
processed. An unauthenticated remote attacker can cause a stack buffer
overflow and smash up to 17 bytes of the stack. The attack requires the
iSCSI target to be enabled on the victim host. Depending on how the
target's code was built (i.e. depending on a compiler, compile flags and
hardware architecture) an attack may lead to a system crash and thus to
a denial-of-service or possibly to a non-authorized access to data
exported by an iSCSI target. Due to the nature of the flaw, privilege
escalation cannot be fully ruled out, although we believe it is highly
unlikely. (bsc#1107832).
- CVE-2018-5390: The Linux kernel could be forced to make very expensive
calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every
incoming packet which can lead to a denial of service (bsc#1102682).
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 12-LTSS:
zypper in -t patch SUSE-SLE-SERVER-12-2018-2355=1
Package List:
- SUSE Linux Enterprise Server 12-LTSS (x86_64):
kgraft-patch-3_12_61-52_146-default-2-2.1
kgraft-patch-3_12_61-52_146-xen-2-2.1
References:
https://www.suse.com/security/cve/CVE-2018-14633.html
https://www.suse.com/security/cve/CVE-2018-5390.html
https://bugzilla.suse.com/1102682
https://bugzilla.suse.com/1107832
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===========================================================================
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The University of Queensland
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