rhsa-2017_2704
Vulnerability from csaf_redhat
Published
2017-09-13 13:42
Modified
2024-11-14 21:45
Summary
Red Hat Security Advisory: kernel-rt security update

Notes

Topic
An update for kernel-rt is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * 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. (CVE-2017-1000251, Important) Red Hat would like to thank Armis Labs for reporting this issue.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


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          "names": [
            "Armis Labs"
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      "cve": "CVE-2017-1000251",
      "cwe": {
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        "name": "Stack-based Buffer Overflow"
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          "text": "1489716"
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          "category": "description",
          "text": "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.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: stack buffer overflow in the native Bluetooth stack",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue does not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5.\n\nThis 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.\n\nFor further information please refer to the vulnerability article in the Customer Portal: https://access.redhat.com/security/vulnerabilities/blueborne",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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          "url": "https://access.redhat.com/security/cve/CVE-2017-1000251"
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        {
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          "url": "https://www.cve.org/CVERecord?id=CVE-2017-1000251"
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          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-1000251",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-1000251"
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        {
          "category": "external",
          "summary": "https://access.redhat.com/blogs/product-security/posts/blueborne",
          "url": "https://access.redhat.com/blogs/product-security/posts/blueborne"
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          "category": "external",
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          "summary": "https://access.redhat.com/solutions/3177231",
          "url": "https://access.redhat.com/solutions/3177231"
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          "summary": "https://www.armis.com/blueborne/",
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  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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