CVE-2019-18675

CVSS V2 High 7.2 CVSS V3 High 7.8

Description

The Linux kernel through 5.3.13 has a start_offset+size Integer Overflow in cpia2_remap_buffer in drivers/media/usb/cpia2/cpia2_core.c because cpia2 has its own mmap implementation. This allows local users (with /dev/video0 access) to obtain read and write permissions on kernel physical pages, which can possibly result in a privilege escalation.

Overview

CVE ID
CVE-2019-18675

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2019-11-25T14:15:12

Last Modified Date
2023-02-24T18:42:44

Weakness Enumerations

CWE	URL
CWE-190	http://cwe.mitre.org/data/definitions/190.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:o:linux:linux_kernel::::::::	1	OR		5.3.13

CVSS Version 2

Version
2.0

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

Access Vector
LOCAL

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
COMPLETE

Integrity Impact
COMPLETE

Availability Impact
COMPLETE

Base Score
7.2

Severity
HIGH

Exploitability Score
3.9

Impact Score
10

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
7.8

Base Severity
HIGH

Exploitability Score
1.8

Impact Score
5.9

References

Reference URL	Reference Tags
https://deshal3v.github.io/blog/kernel-research/mmap_exploitation	Exploit Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/media/usb/cpia2/cpia2_core.c	Vendor Advisory
https://security.netapp.com/advisory/ntap-20200103-0001/
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=be83bbf806822b1b89e0a0f23cd87cddc409e429

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2019-18675
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18675

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 16:54:46				Added to TrackCVE
2022-12-04 06:51:12	2019-11-25T14:15Z	2019-11-25T14:15:12	CVE Published Date	updated
2022-12-04 06:51:12		2020-01-03T11:15:13	CVE Modified Date	updated
2022-12-04 06:51:12		Modified	Vulnerability Status	updated
2023-02-23 15:09:22	Modified	Undergoing Analysis	Vulnerability Status	updated
2023-02-24 19:09:48		2023-02-24T18:42:44	CVE Modified Date	updated
2023-02-24 19:09:48	Undergoing Analysis	Analyzed	Vulnerability Status	updated