SUSE SLES12 Security Update : kernel (SUSE-SU-2017:2073-1)

High Nessus Plugin ID 102254

Synopsis

The remote SUSE host is missing one or more security updates.

Description

This update for the Linux Kernel 3.12.67-60_64_24 fixes several issues. The following security bugs were fixed :

- CVE-2017-7533: A bug in inotify code allowed local users to escalate privilege (bsc#1050751).

- CVE-2017-7645: The NFSv2/NFSv3 server in the nfsd subsystem in the Linux kernel allowed remote attackers to cause a denial of service (system crash) via a long RPC reply, related to net/sunrpc/svc.c, fs/nfsd/nfs3xdr.c, and fs/nfsd/nfsxdr.c (bsc#1046191).

- CVE-2017-2636: Race condition in drivers/tty/n_hdlc.c in the Linux kernel allowed local users to gain privileges or cause a denial of service (double free) by setting the HDLC line discipline (bsc#1027575).

- CVE-2017-9242: The __ip6_append_data function in net/ipv6/ip6_output.c in the Linux kernel is too late in checking whether an overwrite of an skb data structure may occur, which allowed local users to cause a denial of service (system crash) via crafted system calls (bsc#1042892).

- CVE-2017-8890: The inet_csk_clone_lock function in net/ipv4/inet_connection_sock.c in the Linux kernel allowed attackers to cause a denial of service (double free) or possibly have unspecified other impact by leveraging use of the accept system call (bsc#1038564).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server for SAP 12-SP1:zypper in -t patch SUSE-SLE-SAP-12-SP1-2017-1275=1

SUSE Linux Enterprise Server 12-SP1-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-SP1-2017-1275=1

To bring your system up-to-date, use 'zypper patch'.

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1027575

https://bugzilla.suse.com/show_bug.cgi?id=1038564

https://bugzilla.suse.com/show_bug.cgi?id=1042892

https://bugzilla.suse.com/show_bug.cgi?id=1046191

https://bugzilla.suse.com/show_bug.cgi?id=1050751

https://www.suse.com/security/cve/CVE-2017-2636/

https://www.suse.com/security/cve/CVE-2017-7533/

https://www.suse.com/security/cve/CVE-2017-7645/

https://www.suse.com/security/cve/CVE-2017-8890/

https://www.suse.com/security/cve/CVE-2017-9242/

http://www.nessus.org/u?46a38dee

Plugin Details

Severity: High

ID: 102254

File Name: suse_SU-2017-2073-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 2017/08/08

Updated: 2018/11/30

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 7.8

Temporal Score: 7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_67-60_64_24-default, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_67-60_64_24-xen, cpe:/o:novell:suse_linux:12

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2017/08/07

Reference Information

CVE: CVE-2017-2636, CVE-2017-7533, CVE-2017-7645, CVE-2017-8890, CVE-2017-9242