Red Hat update for kernel
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2017-7518 CVE-2017-12188 |
| CWE-ID | CWE-264 CWE-22 |
| Exploitation vector | Local network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Red Hat Enterprise Linux Server - 4 Year Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux Server (for IBM Power LE) - 4 Year Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux Server - TUS Operating systems & Components / Operating system Red Hat Enterprise Linux for Power, little endian - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux for Power, big endian - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux for IBM z Systems - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux Server - AUS Operating systems & Components / Operating system Red Hat Enterprise Linux Server - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux for Power, little endian Operating systems & Components / Operating system Red Hat Enterprise Linux for Power, big endian Operating systems & Components / Operating system Red Hat Enterprise Linux EUS Compute Node Operating systems & Components / Operating system Red Hat Enterprise Linux for IBM z Systems Operating systems & Components / Operating system Red Hat Enterprise Linux for Scientific Computing Operating systems & Components / Operating system Red Hat Enterprise Linux Desktop Operating systems & Components / Operating system Red Hat Enterprise Linux Workstation Operating systems & Components / Operating system Red Hat Enterprise Linux Server Operating systems & Components / Operating system kernel (Red Hat package) Operating systems & Components / Operating system package or component Red Hat Virtualization Host Web applications / Remote management & hosting panels |
| Vendor |
Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Privilege escalation
EUVDB-ID: #VU7206
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-2017-7518
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows an local attacker to gain elevated privileges on the guest system.
The weakness exists due to debug exception error in syscall emulation. A attacker can gain system privileges.
Successful exploitation of the vulnerability results in privilege escalation.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux Server - 4 Year Extended Update Support: 7.4
Red Hat Enterprise Linux Server (for IBM Power LE) - 4 Year Extended Update Support: 7.4
Red Hat Enterprise Linux Server - TUS: 7.4
Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 7.4
Red Hat Enterprise Linux for Power, big endian - Extended Update Support: 7.4
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support: 7.4
Red Hat Enterprise Linux Server - AUS: 7.4
Red Hat Enterprise Linux Server - Extended Update Support: 7.4
kernel (Red Hat package): 3.10.0-123.1.2.el7 - 3.10.0-693.17.1.el7
Red Hat Enterprise Linux for Power, little endian: 7
Red Hat Enterprise Linux for Power, big endian: 7
Red Hat Virtualization Host: 4
Red Hat Enterprise Linux EUS Compute Node: 7.4
Red Hat Enterprise Linux for IBM z Systems: 7
Red Hat Enterprise Linux for Scientific Computing: 7
Red Hat Enterprise Linux Desktop: 7
Red Hat Enterprise Linux Workstation: 7
Red Hat Enterprise Linux Server: 7
:
CPE2.3- cpe:2.3:o:red_hat:red hat enterprise linux server - 4 year extended update support:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red hat enterprise linux server (for ibm power le) - 4 year extended update support:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_tus:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_little_endian_-_extended_update_support:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_big_endian_-_extended_update_support:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_ibm_z_systems_-_extended_update_support:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_aus:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red hat enterprise linux server - extended update support:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:kernel_redhat_package:3.10.0-514.73.1.el7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:kernel_redhat_package:3.10.0-327.85.1.el7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:kernel_redhat_package:3.10.0-514.66.2.el7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_little_endian:7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_big_endian:7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:a:red_hat:red_hat_virtualization_host:4:*:*:*:*:*:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_eus_compute_node:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_ibm_z_systems:7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_scientific_computing:7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_desktop:7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_workstation:7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server:7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:::::*:*:*:*:*:*:
http://access.redhat.com/errata/RHSA-2018:0395
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.
2) Path traversal
EUVDB-ID: #VU12296
Risk: High
CVSSv3.1: 8.3 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-12188
CWE-ID:
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Exploit availability: No
DescriptionThe vulnerability allows an adjacent attacker to cause DoS condition or execute arbitrary code on the target system.
The weakness exists in arch/x86/kvm/mmu.c due to improper traversal of guest pagetable entries to resolve a guest virtual address when nested virtualisation is used. An adjacent attacker can cause the service to crash or execute arbitrary code.
Successful exploitation of the vulnerability may result in system compromise.
Install updates from vendor's website.
Red Hat Enterprise Linux Server - 4 Year Extended Update Support: 7.4
Red Hat Enterprise Linux Server (for IBM Power LE) - 4 Year Extended Update Support: 7.4
Red Hat Enterprise Linux Server - TUS: 7.4
Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 7.4
Red Hat Enterprise Linux for Power, big endian - Extended Update Support: 7.4
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support: 7.4
Red Hat Enterprise Linux Server - AUS: 7.4
Red Hat Enterprise Linux Server - Extended Update Support: 7.4
kernel (Red Hat package): 3.10.0-123.1.2.el7 - 3.10.0-693.17.1.el7
Red Hat Enterprise Linux for Power, little endian: 7
Red Hat Enterprise Linux for Power, big endian: 7
Red Hat Virtualization Host: 4
Red Hat Enterprise Linux EUS Compute Node: 7.4
Red Hat Enterprise Linux for IBM z Systems: 7
Red Hat Enterprise Linux for Scientific Computing: 7
Red Hat Enterprise Linux Desktop: 7
Red Hat Enterprise Linux Workstation: 7
Red Hat Enterprise Linux Server: 7
:
CPE2.3- cpe:2.3:o:red_hat:red hat enterprise linux server - 4 year extended update support:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red hat enterprise linux server (for ibm power le) - 4 year extended update support:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_tus:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_little_endian_-_extended_update_support:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_big_endian_-_extended_update_support:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_ibm_z_systems_-_extended_update_support:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_aus:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red hat enterprise linux server - extended update support:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:kernel_redhat_package:3.10.0-514.73.1.el7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:kernel_redhat_package:3.10.0-327.85.1.el7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:kernel_redhat_package:3.10.0-514.66.2.el7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_little_endian:7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_big_endian:7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:a:red_hat:red_hat_virtualization_host:4:*:*:*:*:*:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_eus_compute_node:7.4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_ibm_z_systems:7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_scientific_computing:7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_desktop:7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_workstation:7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server:7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:::::*:*:*:*:*:*:
http://access.redhat.com/errata/RHSA-2018:0395
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.
