Vulnerability Name:

CVE-2017-7889

Assigned:2017-04-05
Published:2017-04-05
Updated:2018-06-19
Summary:The mm subsystem in the Linux kernel through 4.10.10 does not properly enforce the CONFIG_STRICT_DEVMEM protection mechanism, which allows local users to read or write to kernel memory locations in the first megabyte (and bypass slab-allocation access restrictions) via an application that opens the /dev/mem file, related to arch/x86/mm/init.c and drivers/char/mem.c.
CVSS v3 Severity:7.8 High (CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (Temporal CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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): High
Integrity (I): High
Availibility (A): High
7.8 High (CCN CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (CCN Temporal CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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): High
Integrity (I): High
Availibility (A): High
7.8 High (REDHAT CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (REDHAT Temporal CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-284
CWE-391
References:Source: MISC
Type: VENDOR_ADVISORY
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a4866aa812518ed1a37d8ea0c881dc946409de94

Source: DEBIAN
Type: UNKNOWN
DSA-3945

Source: MISC
Type: VENDOR_ADVISORY
http://www.openwall.com/lists/oss-security/2017/04/16/4

Source: BID
Type: VENDOR_ADVISORY
97690

Source: REDHAT
Type: UNKNOWN
RHSA-2017:1842

Source: REDHAT
Type: UNKNOWN
RHSA-2017:2077

Source: REDHAT
Type: UNKNOWN
RHSA-2017:2669

Source: REDHAT
Type: UNKNOWN
RHSA-2018:1854

Source: XF
Type: UNKNOWN
linux-kernel-cve20177889-sec-bypass(125799)

Source: MISC
Type: VENDOR_ADVISORY
https://github.com/torvalds/linux/commit/a4866aa812518ed1a37d8ea0c881dc946409de94

Source: UBUNTU
Type: UNKNOWN
USN-3583-1

Source: UBUNTU
Type: UNKNOWN
USN-3583-2

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:4.10.10:*:*:*:*:*:*:*

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

  • Configuration RedHat 2:
  • cpe:/a:redhat:rhel_extras_rt:7:*:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:4.10.10:*:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:qradar_network_security:5.4:*:*:*:*:*:*:*

  • Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20177889
    V
    CVE-2017-7889
    2018-07-17
    oval:com.redhat.rhsa:def:20181854
    P
    RHSA-2018:1854: kernel security and bug fix update (Important)
    2018-06-19
    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.precise:def:20177889000
    V
    CVE-2017-7889 on Ubuntu 12.04 LTS (precise) - medium.
    2017-04-16
    oval:com.ubuntu.trusty:def:20177889000
    V
    CVE-2017-7889 on Ubuntu 14.04 LTS (trusty) - medium.
    2017-04-16
    oval:com.ubuntu.artful:def:20177889000
    V
    CVE-2017-7889 on Ubuntu 17.10 (artful) - medium.
    2017-04-16
    oval:com.ubuntu.xenial:def:20177889000
    V
    CVE-2017-7889 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-04-16
    BACK
    linux linux kernel 4.10.10
    linux linux kernel 4.10.10
    ibm qradar network security 5.4