The make_response function in drivers/block/xen-blkback/blkback.c in the Linux kernel before 4.11.8 allows guest OS users to obtain sensitive information from host OS (or other guest OS) kernel memory by leveraging the copying of uninitialized padding fields in Xen block-interface response structures, aka XSA-216.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-10911 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 1.4 |
|---|---|
| Base Metrics | AV:A/AC:H/Au:S/C:P/I:N/A:N |
| Access Vector | Adjacent Network |
| Access Complexity | High |
| Authentication | Single |
| Confidentiality Impact | Partial |
| Integrity Impact | None |
| Availability Impact | None |
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 3 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N |
| Attack Vector | Adjacent Network |
| Attack Complexity | High |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Changed |
| Confidentiality | Low |
| Integrity Impact | None |
| Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Package | State |
|---|---|---|
| Red Hat OpenStack Platform 9.0 | qemu-kvm-rhev | Not affected |
| Red Hat OpenStack Platform 8.0 (Liberty) | qemu-kvm-rhev | Not affected |
| Red Hat OpenStack Platform 12.0 | qemu-kvm-rhev | Not affected |
| Red Hat OpenStack Platform 11.0 (Ocata) | qemu-kvm-rhev | Not affected |
| Red Hat OpenStack Platform 10 | qemu-kvm-rhev | Not affected |
| Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 | qemu-kvm-rhev | Not affected |
| Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 | qemu-kvm-rhev | Not affected |
| Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) | qemu-kvm-rhev | Not affected |
| Red Hat Enterprise Linux 7 | qemu-kvm | Not affected |
| Red Hat Enterprise Linux 7 | qemu-kvm-rhev | Not affected |
| Red Hat Enterprise Linux 6 | qemu-kvm | Not affected |
| Red Hat Enterprise Linux 6 | qemu-kvm-rhev | Not affected |
| Red Hat Enterprise Linux 5 | kvm | Not affected |
| Red Hat Enterprise Linux 5 | xen | Not affected |
Vulmon