Vulnerability Name:

CVE-2017-15306 (CCN-134595)

Assigned:2017-10-14
Published:2017-10-14
Updated:2017-11-28
Summary:The kvm_vm_ioctl_check_extension function in arch/powerpc/kvm/powerpc.c in the Linux kernel before 4.13.11 allows local users to cause a denial of service (NULL pointer dereference and system crash) via a KVM_CHECK_EXTENSION KVM_CAP_PPC_HTM ioctl call to /dev/kvm.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
6.2 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
6.2 Medium (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.4 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.9 Medium (CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
4.9 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
4.9 Medium (REDHAT CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-476
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2017-15306

Source: MISC
Type: Patch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ac64115a66c18c01745bbd3c47a36b124e5fd8c0

Source: MISC
Type: Mailing List, Patch, Third Party Advisory
http://openwall.com/lists/oss-security/2017/11/06/6

Source: MISC
Type: Release Notes
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11

Source: BID
Type: Third Party Advisory, VDB Entry
101693

Source: CCN
Type: BID-101693
Linux Kernel 'arch/powerpc/kvm/powerpc.c' Local Denial of Service Vulnerability

Source: XF
Type: UNKNOWN
linux-kernel-cve201715306-dos(134595)

Source: CCN
Type: Linux Kernel GIT Repository
KVM: PPC: Fix oops when checking KVM_CAP_PPC_HTM

Source: MISC
Type: Patch
https://github.com/torvalds/linux/commit/ac64115a66c18c01745bbd3c47a36b124e5fd8c0

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version <= 4.13.10)

    • Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:7:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:4.13.10:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.redhat.rhsa:def:20180654
    P
    		RHSA-2018:0654: kernel-alt security, bug fix, and enhancement update (Important)
    2018-04-10
    oval:com.ubuntu.xenial:def:2017153060000000
    V
    		CVE-2017-15306 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-11-06
    oval:com.ubuntu.artful:def:201715306000
    V
    		CVE-2017-15306 on Ubuntu 17.10 (artful) - medium.
    2017-11-06
    oval:com.ubuntu.trusty:def:201715306000
    V
    		CVE-2017-15306 on Ubuntu 14.04 LTS (trusty) - medium.
    2017-11-06
    oval:com.ubuntu.xenial:def:201715306000
    V
    		CVE-2017-15306 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-11-06
    BACK
    linux linux kernel *
    linux linux kernel 4.13.10