Vulnerability Name:

CVE-2017-7495 (CCN-126122)

Assigned:2017-05-12
Published:2017-05-12
Updated:2023-02-12
Summary:fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, which allows local users to obtain sensitive information from other users' files in opportunistic circumstances by waiting for a hardware reset, creating a new file, making write system calls, and reading this file.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/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
6.2 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
5.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/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): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
6.2 Medium (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
5.4 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/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): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
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
4.9 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-665
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2017-7495

Source: secalert@redhat.com
Type: Issue Tracking, Patch, Third Party Advisory
secalert@redhat.com

Source: secalert@redhat.com
Type: Release Notes, Vendor Advisory
secalert@redhat.com

Source: secalert@redhat.com
Type: Mailing List, Patch, Third Party Advisory
secalert@redhat.com

Source: CCN
Type: BID-98491
Linux Kernel CVE-2017-7495 Local Information Disclosure Vulnerability

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: Issue Tracking, Patch, Third Party Advisory
secalert@redhat.com

Source: XF
Type: UNKNOWN
linux-kernel-cve20177495-info-disc(126122)

Source: CCN
Type: Linux Kernel GIT Repository
ext4: fix data exposure after a crash

Source: secalert@redhat.com
Type: Issue Tracking, Patch, Third Party Advisory
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Vulnerable Configuration:Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:7:*:*:*:*:*:*:*
    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:7::client:*:*:*:*:*
    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:7::computenode:*:*:*:*:*
    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:7::server:*:*:*:*:*
    • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:7::workstation:*:*:*:*:*
    • Configuration RedHat 6:
  • cpe:/a:redhat:rhel_extras_rt:7:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:4.6.1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.redhat.rhsa:def:20171842
    P
    		RHSA-2017:1842: kernel security, bug fix, and enhancement update (Important)
    2017-08-01
    oval:com.redhat.rhsa:def:20172077
    P
    		RHSA-2017:2077: kernel-rt security, bug fix, and enhancement update (Important)
    2017-08-01
    oval:com.ubuntu.xenial:def:20177495000
    V
    		CVE-2017-7495 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-05-15
    oval:com.ubuntu.xenial:def:201774950000000
    V
    		CVE-2017-7495 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-05-15
    oval:com.ubuntu.artful:def:20177495000
    V
    		CVE-2017-7495 on Ubuntu 17.10 (artful) - medium.
    2017-05-15
    oval:com.ubuntu.trusty:def:20177495000
    V
    		CVE-2017-7495 on Ubuntu 14.04 LTS (trusty) - medium.
    2017-05-15
    BACK
    linux linux kernel 4.6.1