openSUSE Security Update : the Linux Kernel (openSUSE-2017-562)

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openSUSE Security Update : the Linux Kernel (openSUSE-2017-562)

high Nessus Plugin ID 100044

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Synopsis

The remote openSUSE host is missing a security update.

Description

The openSUSE Leap 42.1 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

- CVE-2017-7618: crypto/ahash.c in the Linux kernel allowed attackers to cause a denial of service (API operation calling its own callback, and infinite recursion) by triggering EBUSY on a full queue (bnc#1033340).

- CVE-2016-10318: A missing authorization check in the fscrypt_process_policy function in fs/crypto/policy.c in the ext4 and f2fs filesystem encryption support in the Linux kernel allowed a user to assign an encryption policy to a directory owned by a different user, potentially creating a denial of service (bnc#1032435).

- CVE-2017-7616: Incorrect error handling in the set_mempolicy and mbind compat syscalls in mm/mempolicy.c in the Linux kernel allowed local users to obtain sensitive information from uninitialized stack data by triggering failure of a certain bitmap operation (bnc#1033336).

- CVE-2017-7308: The packet_set_ring function in net/packet/af_packet.c in the Linux kernel did not properly validate certain block-size data, which allowed local users to cause a denial of service (overflow) or possibly have unspecified other impact via crafted system calls (bnc#1031579).

- CVE-2017-2671: The ping_unhash function in net/ipv4/ping.c in the Linux kernel is too late in obtaining a certain lock and consequently cannot ensure that disconnect function calls are safe, which allowed local users to cause a denial of service (panic) by leveraging access to the protocol value of IPPROTO_ICMP in a socket system call (bnc#1031003).

- CVE-2017-7294: The vmw_surface_define_ioctl function in drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux kernel did not validate addition of certain levels data, which allowed local users to trigger an integer overflow and out-of-bounds write, and cause a denial of service (system hang or crash) or possibly gain privileges, via a crafted ioctl call for a /dev/dri/renderD* device (bnc#1031440).

- CVE-2017-7261: The vmw_surface_define_ioctl function in drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux kernel did not check for a zero value of certain levels data, which allowed local users to cause a denial of service (ZERO_SIZE_PTR dereference, and GPF and possibly panic) via a crafted ioctl call for a /dev/dri/renderD* device (bnc#1031052).

- CVE-2017-7187: The sg_ioctl function in drivers/scsi/sg.c in the Linux kernel allowed local users to cause a denial of service (stack-based buffer overflow) or possibly have unspecified other impact via a large command size in an SG_NEXT_CMD_LEN ioctl call, leading to out-of-bounds write access in the sg_write function (bnc#1030213).

The following non-security bugs were fixed :

- ata: ahci_xgene: free structure returned by acpi_get_object_info() (bsc#1033518).

- doc/README.SUSE: update links to KMP manual

- ext4: do not perform data journaling when data is encrypted (bsc#1012876).

- ext4: fix use-after-iput when fscrypt contexts are inconsistent (bsc#1012829).

- ext4: mark inode dirty after converting inline directory (bsc#1012876).

- ext4: reject inodes with negative size (bsc#1012876).

- fs, seqfile: always allow oom killer (bsc#1012876).

- ipv6: make ECMP route replacement less greedy (bsc#930399).

- l2tp: hold tunnel socket when handling control frames in l2tp_ip and l2tp_ip6 (bsc#1028415).

- mm: filemap: do not plant shadow entries without radix tree node (bsc#1012876).

- netfilter: allow logging from non-init namespaces (bsc#970083).

- nfsd4: minor NFSv2/v3 write decoding cleanup (bsc#1034670 CVE#2017-7645).

- nfsd: check for oversized NFSv2/v3 arguments (bsc#1034670 CVE#2017-7645).

- nfsd: stricter decoding of write-like NFSv2/v3 ops (bsc#1034670 CVE#2017-7645).

Solution

Update the affected the Linux Kernel packages.

Plugin Details

Severity: High

ID: 100044

File Name: openSUSE-2017-562.nasl

Version: 3.8

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 5/9/2017

Updated: 1/19/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Critical

Score: 9.8

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

Temporal Vector: E:H/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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

Temporal Vector: E:H/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:opensuse:kernel-debug, p-cpe:/a:novell:opensuse:kernel-debug-base, p-cpe:/a:novell:opensuse:kernel-debug-base-debuginfo, p-cpe:/a:novell:opensuse:kernel-debug-debuginfo, p-cpe:/a:novell:opensuse:kernel-debug-debugsource, p-cpe:/a:novell:opensuse:kernel-debug-devel, p-cpe:/a:novell:opensuse:kernel-debug-devel-debuginfo, p-cpe:/a:novell:opensuse:kernel-default, p-cpe:/a:novell:opensuse:kernel-default-base, p-cpe:/a:novell:opensuse:kernel-default-base-debuginfo, p-cpe:/a:novell:opensuse:kernel-default-debuginfo, p-cpe:/a:novell:opensuse:kernel-default-debugsource, p-cpe:/a:novell:opensuse:kernel-default-devel, p-cpe:/a:novell:opensuse:kernel-devel, p-cpe:/a:novell:opensuse:kernel-docs-html, p-cpe:/a:novell:opensuse:kernel-docs-pdf, p-cpe:/a:novell:opensuse:kernel-ec2, p-cpe:/a:novell:opensuse:kernel-ec2-base, p-cpe:/a:novell:opensuse:kernel-ec2-base-debuginfo, p-cpe:/a:novell:opensuse:kernel-ec2-debuginfo, p-cpe:/a:novell:opensuse:kernel-ec2-debugsource, p-cpe:/a:novell:opensuse:kernel-ec2-devel, p-cpe:/a:novell:opensuse:kernel-macros, p-cpe:/a:novell:opensuse:kernel-obs-build, p-cpe:/a:novell:opensuse:kernel-obs-build-debugsource, p-cpe:/a:novell:opensuse:kernel-obs-qa, p-cpe:/a:novell:opensuse:kernel-pae, p-cpe:/a:novell:opensuse:kernel-pae-base, p-cpe:/a:novell:opensuse:kernel-pae-base-debuginfo, p-cpe:/a:novell:opensuse:kernel-pae-debuginfo, p-cpe:/a:novell:opensuse:kernel-pae-debugsource, p-cpe:/a:novell:opensuse:kernel-pae-devel, p-cpe:/a:novell:opensuse:kernel-pv, p-cpe:/a:novell:opensuse:kernel-pv-base, p-cpe:/a:novell:opensuse:kernel-pv-base-debuginfo, p-cpe:/a:novell:opensuse:kernel-pv-debuginfo, p-cpe:/a:novell:opensuse:kernel-pv-debugsource, p-cpe:/a:novell:opensuse:kernel-pv-devel, p-cpe:/a:novell:opensuse:kernel-source, p-cpe:/a:novell:opensuse:kernel-source-vanilla, p-cpe:/a:novell:opensuse:kernel-syms, p-cpe:/a:novell:opensuse:kernel-vanilla, p-cpe:/a:novell:opensuse:kernel-vanilla-debuginfo, p-cpe:/a:novell:opensuse:kernel-vanilla-debugsource, p-cpe:/a:novell:opensuse:kernel-vanilla-devel, p-cpe:/a:novell:opensuse:kernel-xen, p-cpe:/a:novell:opensuse:kernel-xen-base, p-cpe:/a:novell:opensuse:kernel-xen-base-debuginfo, p-cpe:/a:novell:opensuse:kernel-xen-debuginfo, p-cpe:/a:novell:opensuse:kernel-xen-debugsource, p-cpe:/a:novell:opensuse:kernel-xen-devel, cpe:/o:novell:opensuse:42.1

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/8/2017

Exploitable With

Core Impact

Metasploit (AF_PACKET packet_set_ring Privilege Escalation)

Reference Information

CVE: CVE-2016-10318, CVE-2017-2671, CVE-2017-7187, CVE-2017-7261, CVE-2017-7294, CVE-2017-7308, CVE-2017-7616, CVE-2017-7618