CVE-2018-7755

Aliases:UBUNTU-CVE-2018-7755DEBIAN-CVE-2018-7755
Advisory lineage Upstream: 0 Downstream: 23
Modified
Published: 08 Mar 2018, 07:00
Last modified:05 Aug 2024, 06:37

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
5.5 MEDIUM
v3.0 (nvd)
EPSS Score
0.68% LOW
1% probability +0.67%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

08 Mar 2018, 07:00
Published
Vulnerability first disclosed
05 Aug 2024, 06:37
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.0•MEDIUM•Score: 5.5CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
  • v2.0•LOW•Score: 2.1AV:L/AC:L/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.68%• Percentile: 51%

Techniques & Countermeasures

  • CWE-200•Exposure of Sensitive Information to an Unauthorized Actor

    The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Affected Systems

  • canonical•ubuntu_linux

    12.04 | 14.04 | 16.04 | 17.10 | 18.04

  • debian•linux

    < 4.18.10-1 | < 4.18.10-1 | < 4.18.10-1 | < 4.18.10-1

  • ubuntu•linux

    < 3.13.0-153.203 | < 4.4.0-130.156 | < 4.15.0-24.26

  • ubuntu•linux-aws

    < 4.4.0-1024.25 | < 4.4.0-1062.71 | < 4.15.0-1011.11

  • ubuntu•linux-azure

    < 4.15.0-1014.14~16.04.1 | < 4.15.0-1014.14

  • ubuntu•linux-azure-6.11

    all

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-azure-fde-5.15

    all

  • ubuntu•linux-fips

    < 4.4.0-1008.10

  • ubuntu•linux-gcp

    < 4.15.0-1014.14~16.04.1 | < 4.15.0-1010.10

  • ubuntu•linux-gcp-6.11

    all

  • ubuntu•linux-gke

    all

  • ubuntu•linux-hwe

    < 4.15.0-24.26~16.04.1

  • ubuntu•linux-hwe-6.11

    all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1029.34 | < 4.15.0-1012.12

  • ubuntu•linux-lowlatency-hwe-6.11

    all

  • ubuntu•linux-lts-xenial

    < 4.4.0-130.156~14.04.1

  • ubuntu•linux-oem

    < 4.13.0-1031.35 | < 4.15.0-1009.12

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    < 4.4.0-1092.100 | < 4.15.0-1013.14 | all

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all | all

  • ubuntu•linux-snapdragon

    < 4.4.0-1095.100

  • linux•linux_kernel

    ≤ 4.15.7

References (24)