OpenSUSE Linux update for xen
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2018-12891 CVE-2018-12892 CVE-2018-12893 CVE-2018-3665 |
| CWE-ID | CWE-264 CWE-200 |
| Exploitation vector | Local network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Opensuse Operating systems & Components / Operating system |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Denial of service
EUVDB-ID: #VU13520
Risk: Low
CVSSv3.1: 6.4 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-12891
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows an adjacent attacker to cause DoS condition on the target system.
The vulnerability exists on x86 systems due to unspecified flaw. An adjacent attacker can invoke certain PV MMU operations to preempt the current vCPU, prevent use of a physical CPU and cause the system to crash.
MitigationUpdate the affected packages.
Opensuse: 15.0
External linkshttp://lists.opensuse.org/opensuse-security-announce/2018-07/msg00033.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.
2) Security restrictions bypass
EUVDB-ID: #VU13522
Risk: Low
CVSSv3.1: 5.4 [CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-12892
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows an adjacent attacker with administrative privileges to bypass security restrictions on the target system.
The vulnerability exists on x86 systems due to a flaw in libxl. An adjacent attacker can bypass the read-only restrictions on a SCSI disk image in certain cases.
MitigationUpdate the affected packages.
Opensuse: 15.0
External linkshttp://lists.opensuse.org/opensuse-security-announce/2018-07/msg00033.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Denial of service
EUVDB-ID: #VU13521
Risk: Low
CVSSv3.1: 6.4 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-12893
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows an adjacent attacker to cause DoS condition on the target system.
The vulnerability exists on x86 systems due to unspecified flaw. An adjacent attacker can invoke hardware debugging facilities, trigger a debug exception and cause the system to crash.
MitigationUpdate the affected packages.
Opensuse: 15.0
External linkshttp://lists.opensuse.org/opensuse-security-announce/2018-07/msg00033.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.
4) Side-channel attack
EUVDB-ID: #VU13337
Risk: Low
CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-3665
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to obtain potentially sensitive information.
The vulnerability exists due to utilizing the Lazy FP state restore technique for floating point state when context switching between application processes. A local attacker can conduct cache side-channel attacks and determine register values of other processes.
Note: This vulnerability is known as LazyFP.
MitigationUpdate the affected packages.
Opensuse: 15.0
External linkshttp://lists.opensuse.org/opensuse-security-announce/2018-07/msg00033.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.
