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Sicherheit: Mehrere Probleme in Linux
Aktuelle Meldungen Distributionen
Name: Mehrere Probleme in Linux
ID: SUSE-SU-2018:3172-1
Distribution: SUSE
Plattformen: SUSE Linux Enterprise Server 12-SP1-LTSS
Datum: Mi, 17. Oktober 2018, 07:40
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-17182
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14633
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5390
Applikationen: Linux

Originalnachricht

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 31
for SLE 12 SP1)
______________________________________________________________________________

Announcement ID: SUSE-SU-2018:3172-1
Rating: important
References: #1102682 #1107832 #1110233
Cross-References: CVE-2018-14633 CVE-2018-17182 CVE-2018-5390

Affected Products:
SUSE Linux Enterprise Server 12-SP1-LTSS
______________________________________________________________________________

An update that fixes three vulnerabilities is now available.

Description:

This update for the Linux Kernel 3.12.74-60_64_104 fixes several issues.

The following security issues were fixed:

- CVE-2018-17182: The vmacache_flush_all function in mm/vmacache.c
mishandled sequence number overflows. An attacker can trigger a
use-after-free (and possibly gain privileges) via certain thread
creation, map, unmap, invalidation, and dereference operations
(bsc#1110233).
- CVE-2018-14633: A security flaw was found in the
chap_server_compute_md5() function in the ISCSI target code 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-SP1-LTSS:

zypper in -t patch SUSE-SLE-SERVER-12-SP1-2018-2274=1



Package List:

- SUSE Linux Enterprise Server 12-SP1-LTSS (x86_64):

kgraft-patch-3_12_74-60_64_104-default-2-2.1
kgraft-patch-3_12_74-60_64_104-xen-2-2.1


References:

https://www.suse.com/security/cve/CVE-2018-14633.html
https://www.suse.com/security/cve/CVE-2018-17182.html
https://www.suse.com/security/cve/CVE-2018-5390.html
https://bugzilla.suse.com/1102682
https://bugzilla.suse.com/1107832
https://bugzilla.suse.com/1110233

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