A flaw was found in the way memory was being allocated on the stack for user space binaries. If heap (or different memory region) and stack memory regions were adjacent to each other, an attacker could use this flaw to jump over the stack guard gap, cause controlled memory corruption on process stack or the adjacent memory region, and thus increase their privileges on the system. This is a kernel-side mitigation which increases the stack guard gap size from one page to 1 MiB to make successful exploitation of this issue more difficult.
Find out more about CVE-2017-1000364 from the MITRE CVE dictionary dictionary and NIST NVD.
This is a kernel-side mitigation. For a related glibc mitigation please see https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-1000366 .
| Base Score | 6.2 |
|---|---|
| Base Metrics | AV:L/AC:H/Au:N/C:C/I:C/A:C |
| Access Vector | Local |
| Access Complexity | High |
| Authentication | None |
| Confidentiality Impact | Complete |
| Integrity Impact | Complete |
| Availability Impact | Complete |
| CVSS3 Base Score | 7.4 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Local |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux for Real Time for NFV (v. 7) (kernel-rt) | RHSA-2017:1616 | 2017-06-28 |
| Red Hat Enterprise Linux Server (v. 5 ELS) (kernel) | RHSA-2017:1482 | 2017-06-19 |
| Red Hat Enterprise Linux Advanced Update Support 6.2 (kernel) | RHSA-2017:1491 | 2017-06-19 |
| Red Hat Enterprise Linux Long Life (v. 5.9 server) (kernel) | RHSA-2017:1483 | 2017-06-19 |
| Red Hat Enterprise Linux Server TUS (v. 6.6) (kernel) | RHSA-2017:1488 | 2017-06-19 |
| Red Hat Container Development Kit 3.0 | RHSA-2017:1567 | 2017-06-21 |
| Red Hat Enterprise Linux Advanced Update Support 6.5 (kernel) | RHSA-2017:1489 | 2017-06-19 |
| Red Hat Enterprise Linux 6 (kernel) | RHSA-2017:1486 | 2017-06-19 |
| Red Hat MRG Grid for RHEL 6 Server v.2 (kernel-rt) | RHSA-2017:1647 | 2017-06-28 |
| Red Hat Enterprise Linux 7 (kernel) | RHSA-2017:1484 | 2017-06-20 |
| Red Hat Enterprise Linux Extended Update Support 7.2 (kernel) | RHSA-2017:1485 | 2017-06-19 |
| Red Hat Enterprise Linux Server TUS (v. 6.5) (kernel) | RHSA-2017:1489 | 2017-06-19 |
| Red Hat Enterprise Linux Extended Update Support 6.7 (kernel) | RHSA-2017:1487 | 2017-06-19 |
| Red Hat Enterprise Linux Advanced Update Support 6.6 (kernel) | RHSA-2017:1488 | 2017-06-19 |
| Red Hat Enterprise Linux Advanced Update Support 6.4 (kernel) | RHSA-2017:1490 | 2017-06-19 |
| Platform | Package | State |
|---|---|---|
| Red Hat Virtualization 4 | rhev-hypervisor-ng | Affected |
| Red Hat Virtualization 4 | rhevm-appliance | Affected |
| RHEV Manager 3 | rhev-hypervisor | Affected |
| RHEV Manager 3 | rhevm-appliance | Affected |
Vulmon