Vulnerability Name:

CVE-2018-7755 (CCN-140065)

Assigned:2018-03-07
Published:2018-03-07
Updated:2018-10-04
Summary:An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location of kernel code and data and bypass kernel security protections such as KASLR.
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
4.0 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
3.5 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/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): None
Integrity (I): Low
Availibility (A): None
5.9 Medium (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N)
5.2 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
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
2.1 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-200
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2018-7755

Source: CCN
Type: IBM Security Bulletin 843434 (API Connect)
IBM API Connect has addressed multiple vulnerabilities in Developer Portal's dependencies - Cumulative list from June 28, 2018 to December 13, 2018

Source: REDHAT
Type: UNKNOWN
RHSA-2019:2029

Source: REDHAT
Type: UNKNOWN
RHSA-2019:2043

Source: XF
Type: UNKNOWN
linux-kernel-cve20187755-sec-bypass(140065)

Source: MLIST
Type: UNKNOWN
[debian-lts-announce] 20181003 [SECURITY] [DLA 1531-1] linux-4.9 security update

Source: CCN
Type: LKML Web site
Do not copy a kernel pointer to user memory in FDGETPRM ioctl

Source: MISC
Type: Exploit, Third Party Advisory
https://lkml.org/lkml/2018/3/7/1116

Source: UBUNTU
Type: Third Party Advisory
USN-3695-1

Source: UBUNTU
Type: Third Party Advisory
USN-3695-2

Source: UBUNTU
Type: Third Party Advisory
USN-3696-1

Source: UBUNTU
Type: Third Party Advisory
USN-3696-2

Source: UBUNTU
Type: Third Party Advisory
USN-3697-1

Source: UBUNTU
Type: Third Party Advisory
USN-3697-2

Source: UBUNTU
Type: Third Party Advisory
USN-3698-1

Source: UBUNTU
Type: Third Party Advisory
USN-3698-2

Source: DEBIAN
Type: UNKNOWN
DSA-4308

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version <= 4.15.7)

    • Configuration 2:
  • cpe:/o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

    • 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:4.15.7:*:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:api_connect:5.0.8.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:api_connect:5.0.8.4:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:531
    P
    		Security update for the Linux Kernel (Important)
    2022-06-17
    oval:org.opensuse.security:def:4604
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:6039
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:4734
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:6331
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:5241
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:4295
    P
    		Security update for the Linux Kernel (Important)
    2022-05-16
    oval:org.opensuse.security:def:6034
    P
    		Security update for the Linux Kernel (Important)
    2022-05-12
    oval:com.redhat.rhsa:def:20192043
    P
    		RHSA-2019:2043: kernel-rt security and bug fix update (Important)
    2019-08-07
    oval:com.redhat.rhsa:def:20192029
    P
    		RHSA-2019:2029: kernel security, bug fix, and enhancement update (Important)
    2019-08-06
    oval:com.ubuntu.xenial:def:201877550000000
    V
    		CVE-2018-7755 on Ubuntu 16.04 LTS (xenial) - low.
    2018-03-08
    oval:com.ubuntu.artful:def:20187755000
    V
    		CVE-2018-7755 on Ubuntu 17.10 (artful) - low.
    2018-03-08
    oval:com.ubuntu.xenial:def:20187755000
    V
    		CVE-2018-7755 on Ubuntu 16.04 LTS (xenial) - low.
    2018-03-08
    oval:com.ubuntu.bionic:def:20187755000
    V
    		CVE-2018-7755 on Ubuntu 18.04 LTS (bionic) - low.
    2018-03-08
    oval:com.ubuntu.cosmic:def:201877550000000
    V
    		CVE-2018-7755 on Ubuntu 18.10 (cosmic) - low.
    2018-03-08
    oval:com.ubuntu.cosmic:def:20187755000
    V
    		CVE-2018-7755 on Ubuntu 18.10 (cosmic) - low.
    2018-03-08
    oval:com.ubuntu.bionic:def:201877550000000
    V
    		CVE-2018-7755 on Ubuntu 18.04 LTS (bionic) - low.
    2018-03-08
    oval:com.ubuntu.trusty:def:20187755000
    V
    		CVE-2018-7755 on Ubuntu 14.04 LTS (trusty) - low.
    2018-03-08
    BACK
    linux linux kernel *
    canonical ubuntu linux 12.04
    canonical ubuntu linux 14.04
    canonical ubuntu linux 16.04
    canonical ubuntu linux 17.10
    canonical ubuntu linux 18.04
    linux linux kernel 4.15.7
    ibm api connect 5.0.8.0
    ibm api connect 5.0.8.4