Vulnerability Name:

CVE-2017-15537

Assigned:2017-10-17
Published:2017-10-17
Updated:2018-01-12
Summary:The x86/fpu (Floating Point Unit) subsystem in the Linux kernel before 4.13.5, when a processor supports the xsave feature but not the xsaves feature, does not correctly handle attempts to set reserved bits in the xstate header via the ptrace() or rt_sigreturn() system call, allowing local users to read the FPU registers of other processes on the system, related to arch/x86/kernel/fpu/regset.c and arch/x86/kernel/fpu/signal.c.
CVSS v3 Severity:5.5 Medium (CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
4.8 Medium (Temporal CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/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): High
Integrity (I): None
Availibility (A): None
3.3 Low (CCN CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
2.9 Low (CCN Temporal CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/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): Low
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-200
References:Source: CONFIRM
Type: VENDOR_ADVISORY
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=814fb7bb7db5433757d76f4c4502c96fc53b0b5e

Source: CONFIRM
Type: VENDOR_ADVISORY
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5

Source: XF
Type: UNKNOWN
linux-kernel-cve201715537-info-disc(133622)

Source: CONFIRM
Type: VENDOR_ADVISORY
https://github.com/torvalds/linux/commit/814fb7bb7db5433757d76f4c4502c96fc53b0b5e

Source: CONFIRM
Type: UNKNOWN
https://source.android.com/security/bulletin/pixel/2018-01-01

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:4.13.4:*:*:*:*:*:*:*

  • Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.xenial:def:201715537000
    V
    CVE-2017-15537 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-10-17
    oval:com.ubuntu.trusty:def:201715537000
    V
    CVE-2017-15537 on Ubuntu 14.04 LTS (trusty) - medium.
    2017-10-17
    BACK
    linux linux_kernel 4.13.4