CVE-2017-1000251

Impact:
Important
Public Date:
2017-09-12
CWE:
CWE-121
Bugzilla:
1489716: CVE-2017-1000251 kernel: stack buffer overflow in the native Bluetooth stack
A stack buffer overflow flaw was found in the way the Bluetooth subsystem of the Linux kernel processed pending L2CAP configuration responses from a client. On systems with the stack protection feature enabled in the kernel (CONFIG_CC_STACKPROTECTOR=y, which is enabled on all architectures other than s390x and ppc64[le]), an unauthenticated attacker able to initiate a connection to a system via Bluetooth could use this flaw to crash the system. Due to the nature of the stack protection feature, code execution cannot be fully ruled out, although we believe it is unlikely. On systems without the stack protection feature (ppc64[le]; the Bluetooth modules are not built on s390x), an unauthenticated attacker able to initiate a connection to a system via Bluetooth could use this flaw to remotely execute arbitrary code on the system with ring 0 (kernel) privileges.

Find out more about CVE-2017-1000251 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue does not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5.

This issue affects the version of the kernel packages as shipped with Red Hat Enterprise Linux 6 and 7, and Red Hat Enterprise MRG 2. Future kernel updates for Red Hat Enterprise MRG 2 will address this issue.

For further information please refer to the vulnerability article in the Customer Portal: https://access.redhat.com/security/vulnerabilities/blueborne

CVSS v2 metrics

Base Score 6.8
Base Metrics AV:A/AC:H/Au:N/C:C/I:C/A:C
Access Vector Adjacent Network
Access Complexity High
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete

CVSS v3 metrics

CVSS3 Base Score 7.5
CVSS3 Base Metrics CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Adjacent Network
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).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux Server TUS (v. 6.6) (kernel) RHSA-2017:2731 2017-09-14
Red Hat Enterprise Linux Extended Update Support 7.3 (kernel) RHSA-2017:2680 2017-09-12
Red Hat Enterprise Linux Server TUS (v. 6.5) (kernel) RHSA-2017:2707 2017-09-13
Red Hat Enterprise Linux 7 (kernel) RHSA-2017:2679 2017-09-12
Red Hat Enterprise Linux Advanced Update Support 6.5 (kernel) RHSA-2017:2707 2017-09-13
Red Hat Enterprise Linux Extended Update Support 6.7 (kernel) RHSA-2017:2682 2017-09-12
Red Hat Enterprise Linux for Real Time for NFV (v. 7) (kernel-rt) RHSA-2017:2704 2017-09-13
Red Hat Enterprise Linux Advanced Update Support 6.4 (kernel) RHSA-2017:2683 2017-09-12
Red Hat Enterprise Linux 6 (kernel) RHSA-2017:2681 2017-09-12
Red Hat Enterprise Linux Advanced Update Support 6.2 (kernel) RHSA-2017:2732 2017-09-14
MRG Grid for RHEL 6 Server v.2 (kernel-rt) RHSA-2017:2705 2017-09-13
Red Hat Enterprise Linux Advanced Update Support 6.6 (kernel) RHSA-2017:2731 2017-09-14
Red Hat Enterprise Linux Extended Update Support 7.2 (kernel) RHSA-2017:2706 2017-09-13

Affected Packages State

Platform Package State
Red Hat Enterprise MRG 2 realtime-kernel Affected
Red Hat Enterprise Linux 7 kernel-alt Affected
Red Hat Enterprise Linux 5 kernel Not affected

Acknowledgements

Red Hat would like to thank Armis Labs for reporting this issue.

Mitigation

External References

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