National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2018-7755 Detail

Current 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.

Source:  MITRE
Description Last Modified:  03/08/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.5 MEDIUM
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 1.8

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 2.1 LOW
Vector: (AV:L/AC:L/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html
https://lkml.org/lkml/2018/3/7/1116 Exploit Third Party Advisory
https://usn.ubuntu.com/3695-1/ Third Party Advisory
https://usn.ubuntu.com/3695-2/ Third Party Advisory
https://usn.ubuntu.com/3696-1/ Third Party Advisory
https://usn.ubuntu.com/3696-2/ Third Party Advisory
https://usn.ubuntu.com/3697-1/ Third Party Advisory
https://usn.ubuntu.com/3697-2/ Third Party Advisory
https://usn.ubuntu.com/3698-1/ Third Party Advisory
https://usn.ubuntu.com/3698-2/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4308

Technical Details

Vulnerability Type (View All)

  • Information Leak / Disclosure (CWE-200)

Change History

6 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-7755
NVD Published Date:
03/08/2018
NVD Last Modified:
10/04/2018