CVE-2018-7755

LOW

Description

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.

References

https://access.redhat.com/errata/RHSA-2019:2029

https://access.redhat.com/errata/RHSA-2019:2043

https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html

https://lkml.org/lkml/2018/3/7/1116

https://usn.ubuntu.com/3695-1/

https://usn.ubuntu.com/3695-2/

https://usn.ubuntu.com/3696-1/

https://usn.ubuntu.com/3696-2/

https://usn.ubuntu.com/3697-1/

https://usn.ubuntu.com/3697-2/

https://usn.ubuntu.com/3698-1/

https://usn.ubuntu.com/3698-2/

https://www.debian.org/security/2018/dsa-4308

Details

Source: MITRE

Published: 2018-03-08

Updated: 2018-10-04

Type: CWE-200

Risk Information

CVSS v2.0

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3.0

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Tenable Plugins

View all (26 total)

IDNameProductFamilySeverity
131805EulerOS 2.0 SP5 : kernel (EulerOS-SA-2019-2531)NessusHuawei Local Security Checks
high
129064Amazon Linux 2 : kernel (ALAS-2019-1279)NessusAmazon Linux Local Security Checks
low
129006Amazon Linux AMI : kernel (ALAS-2019-1279)NessusAmazon Linux Local Security Checks
low
128651CentOS 7 : kernel (CESA-2019:2029)NessusCentOS Local Security Checks
high
128226Scientific Linux Security Update : kernel on SL7.x x86_64 (20190806)NessusScientific Linux Local Security Checks
high
127655RHEL 7 : kernel-rt (RHSA-2019:2043)NessusRed Hat Local Security Checks
high
127650RHEL 7 : kernel (RHSA-2019:2029)NessusRed Hat Local Security Checks
high
125101EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1513)NessusHuawei Local Security Checks
critical
121505Slackware 14.2 : Slackware 14.2 kernel (SSA:2019-030-01)NessusSlackware Local Security Checks
high
121201Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2019-4509)NessusOracle Linux Local Security Checks
medium
119638Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2018-4304)NessusOracle Linux Local Security Checks
high
119567Oracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2018-4301)NessusOracle Linux Local Security Checks
high
119566OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0286)NessusOracleVM Local Security Checks
high
119535Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4300)NessusOracle Linux Local Security Checks
high
119534Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4299)NessusOracle Linux Local Security Checks
high
117908Debian DLA-1531-1 : linux-4.9 security updateNessusDebian Local Security Checks
high
117862Debian DSA-4308-1 : linux - security updateNessusDebian Local Security Checks
high
111267Ubuntu 16.04 LTS : Linux kernel (HWE) regression (USN-3718-2)NessusUbuntu Local Security Checks
high
111266Ubuntu 18.04 LTS : Linux kernel regression (USN-3718-1)NessusUbuntu Local Security Checks
high
110900Ubuntu 14.04 LTS : linux vulnerabilities (USN-3698-1)NessusUbuntu Local Security Checks
medium
110899Ubuntu 16.04 LTS : linux-oem vulnerabilities (USN-3697-2)NessusUbuntu Local Security Checks
medium
110898Ubuntu 17.10 : linux, linux-raspi2 vulnerabilities (USN-3697-1)NessusUbuntu Local Security Checks
medium
110897Ubuntu 14.04 LTS : linux-lts-xenial, linux-aws vulnerabilities (USN-3696-2)NessusUbuntu Local Security Checks
medium
110896Ubuntu 16.04 LTS : linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities (USN-3696-1)NessusUbuntu Local Security Checks
medium
110895Ubuntu 16.04 LTS : linux-hwe, linux-azure vulnerabilities (USN-3695-2)NessusUbuntu Local Security Checks
high
110894Ubuntu 18.04 LTS : linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oem, linux-raspi2 vulnerabilities (USN-3695-1)NessusUbuntu Local Security Checks
high