SUSE Linux update for the Linux Kernel
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 12 |
| CVE-ID | CVE-2017-1000252 CVE-2017-11472 CVE-2017-12134 CVE-2017-12153 CVE-2017-12154 CVE-2017-13080 CVE-2017-14051 CVE-2017-14106 CVE-2017-14489 CVE-2017-15265 CVE-2017-15649 CVE-2017-6346 |
| CWE-ID | CWE-617 CWE-284 CWE-264 CWE-476 CWE-320 CWE-190 CWE-369 CWE-20 CWE-416 CWE-362 |
| Exploitation vector | Local network |
| Public exploit |
Public exploit code for vulnerability #6 is available. Public exploit code for vulnerability #9 is available. Public exploit code for vulnerability #11 is available. |
| Vulnerable software Subscribe |
SUSE Linux Operating systems & Components / Operating system |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 12 vulnerabilities.
1) Assertion failure
EUVDB-ID: #VU8695
Risk: Low
CVSSv3.1: 5.9 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-1000252
CWE-ID:
CWE-617 - Reachable Assertion
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The KVM subsystem in the Linux kernel through 4.13.3 allows guest OS
users to cause a denial of service (assertion failure, and hypervisor
hang or crash) via an out-of bounds guest_irq value, related to
arch/x86/kvm/vmx.c and virt/kvm/eventfd.c.
Update the affected packages.
SUSE Linux: 12
External linkshttp://lists.opensuse.org/opensuse-security-announce/2017-10/msg00073.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Improper access control
EUVDB-ID: #VU11763
Risk: Low
CVSSv3.1: 4.6 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-11472
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to obtain potentially sensitive information and bypass security restrictions on the target system.
The weakness exists in the acpi_ns_terminate() function in drivers/acpi/acpica/nsutils.c due to it does not flush the operand cache and causes a kernel stack dump. A local attacker can submit a specially crafted ACPI table, gain access to potentially sensitive information from kernel memory and bypass the KASLR protection mechanism.
MitigationUpdate the affected packages.
SUSE Linux: 12
External linkshttp://lists.opensuse.org/opensuse-security-announce/2017-10/msg00073.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Privilege escalation
EUVDB-ID: #VU7952
Risk: Low
CVSSv3.1: 7 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-12134
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local attacker on a Linux-based guest system to gain elevated privileges on the host system.
The weakness exists due to aa flaw in merging adjacent block IO requests. A local attacker on the guest system can incorrectly access memory during block stream processing to obtain potentially sensitive information or gain elevated privileges on the host system.
Update the affected packages.
SUSE Linux: 12
External linkshttp://lists.opensuse.org/opensuse-security-announce/2017-10/msg00073.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) NULL pointer dereference
EUVDB-ID: #VU8694
Risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-12153
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
A security flaw was discovered in the nl80211_set_rekey_data() function
in net/wireless/nl80211.c in the Linux kernel through 4.13.3. This
function does not check whether the required attributes are present in
a Netlink request. This request can be issued by a user with the
CAP_NET_ADMIN capability and may result in a NULL pointer dereference
and system crash.
Update the affected packages.
SUSE Linux: 12
External linkshttp://lists.opensuse.org/opensuse-security-announce/2017-10/msg00073.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
5) Improper privilege management
EUVDB-ID: #VU8696
Risk: Low
CVSSv3.1: 5.9 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-12154
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The prepare_vmcs02 function in arch/x86/kvm/vmx.c in the Linux kernel
through 4.13.3 does not ensure that the "CR8-load exiting" and
"CR8-store exiting" L0 vmcs02 controls exist in cases where L1 omits
the "use TPR shadow" vmcs12 control, which allows KVM L2 guest OS users
to obtain read and write access to the hardware CR8 register.
Update the affected packages.
SUSE Linux: 12
External linkshttp://lists.opensuse.org/opensuse-security-announce/2017-10/msg00073.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
6) Key management errors
EUVDB-ID: #VU8840
Risk: Medium
CVSSv3.1: 9.1 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:U/RC:C]
CVE-ID: CVE-2017-13080
CWE-ID:
CWE-320 - Key Management Errors
Exploit availability: No
DescriptionThe vulnerability allows an adjacent attacker to force a supplicant to reinstall a previously used group key.
The weakness exists in the processing of the 802.11i 4-way handshake messages of the WPA and WPA2 protocols due to ambiguities in the processing of associated protocol messages. An adjacent attacker can use man-in-the-middle techniques to retransmit previously used message exchanges between supplicant and authenticator.
The vulnerability is dubbed "KRACK" attack.
Update the affected packages.
SUSE Linux: 12
External linkshttp://lists.opensuse.org/opensuse-security-announce/2017-10/msg00073.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
7) Integer overflow
EUVDB-ID: #VU10715
Risk: Low
CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-14051
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists in the qla2x00_sysfs_write_optrom_ctl function in drivers/scsi/qla2xxx/qla_attr.ct due to an integer overflow. A local attacker can gain root access and cause the service to crash.
Update the affected packages.
SUSE Linux: 12
External linkshttp://lists.opensuse.org/opensuse-security-announce/2017-10/msg00073.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
8) Divide by zero
EUVDB-ID: #VU8922
Risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-14106
CWE-ID:
CWE-369 - Divide By Zero
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists due to divide-by-zero error in the tcp_disconnect() function in net/ipv4/tcp.c. A local attacker can trigger a disconnect within a certain tcp_recvmsg code path and cause kernel panic.
Successful exploitation of the vulnerability results in denial of service.
Update the affected packages.
SUSE Linux: 12
External linkshttp://lists.opensuse.org/opensuse-security-announce/2017-10/msg00073.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
9) Denial of service
EUVDB-ID: #VU10720
Risk: Low
CVSSv3.1: 5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2017-14489
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: Yes
DescriptionThe vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists in the drivers/scsi/scsi_transport_iscsi.c due to leveraging incorrect length validation. A local attacker can cause a denial of service.
Update the affected packages.
SUSE Linux: 12
External linkshttp://lists.opensuse.org/opensuse-security-announce/2017-10/msg00073.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
10) Use-after-free
EUVDB-ID: #VU8816
Risk: Low
CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-15265
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to gain elevated privileges on the target system.
The vulnerability exists due to use-after-free error in the ALSA sequencer interface (/dev/snd/seq). A local attacker can run a specially crafted application, trigger memory corruption and execute arbitrary code with root privileges.
Successful exploitation of the vulnerability may result in system compromise.
Update the affected packages.
SUSE Linux: 12
External linkshttp://lists.opensuse.org/opensuse-security-announce/2017-10/msg00073.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
11) Privilege escalation
EUVDB-ID: #VU11119
Risk: Low
CVSSv3.1: 7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2017-15649
Exploit availability: Yes
DescriptionThe vulnerability allows a local attacker to gain elevated privileges on the target system.
The weakness exists in net/packet/af_packet.c due to race condition (involving fanout_add and packet_do_bind. A local attacker can supply specially crafted system calls, trigger mishandling of packet_fanout data structures, trigger use-after-free error and gain root privileges.
Update the affected packages.
SUSE Linux: 12
External linkshttp://lists.opensuse.org/opensuse-security-announce/2017-10/msg00073.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
12) Use-after-free error
EUVDB-ID: #VU6653
Risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-6346
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists due to race condition in net/packet/af_packet.c. A local attacker can use a multithreaded application, make PACKET_FANOUT setsockopt system calls, trigger use-after-free error and cause the system to crash.
Update the affected packages.
SUSE Linux: 12
External linkshttp://lists.opensuse.org/opensuse-security-announce/2017-10/msg00073.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
