CVE Vulnerability

CVE-2018-7755

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.

2.1 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

5.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://lkml.org/lkml/2018/3/7/1116 Exploit Third Party Advisory
https://usn.ubuntu.com/3698-2/ Third Party Advisory
https://usn.ubuntu.com/3697-2/ Third Party Advisory
https://usn.ubuntu.com/3697-1/ Third Party Advisory
https://usn.ubuntu.com/3696-2/ Third Party Advisory
https://usn.ubuntu.com/3696-1/ Third Party Advisory
https://usn.ubuntu.com/3695-2/ Third Party Advisory
https://usn.ubuntu.com/3695-1/ Third Party Advisory
https://usn.ubuntu.com/3698-1/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4308
https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html
https://access.redhat.com/errata/RHSA-2019:2043
https://access.redhat.com/errata/RHSA-2019:2029
Configurations

Configuration 1

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
Information

Published : 2018-03-08 07:29

Updated : 2018-10-04 10:29

NVD link : CVE-2018-7755

Mitre link : CVE-2018-7755

Products Affected
No products.
CWE
CWE-200