CVE-2018-18445

CVSS V2 High 7.2 CVSS V3 High 7.8

Description

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjust_scalar_min_max_vals in kernel/bpf/verifier.c mishandles 32-bit right shifts.

Overview

CVE ID
CVE-2018-18445

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2018-10-17T19:29:00

Last Modified Date
2023-01-17T21:34:37

Weakness Enumerations

CWE	URL
CWE-125	http://cwe.mitre.org/data/definitions/125.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:o:linux:linux_kernel::::::::	1	OR	4.14	4.14.75
cpe:2.3:o:linux:linux_kernel::::::::	1	OR	4.15	4.15.18
cpe:2.3:o:linux:linux_kernel::::::::	1	OR	4.16	4.16.18
cpe:2.3:o:linux:linux_kernel::::::::	1	OR	4.17	4.17.9
cpe:2.3:o:linux:linux_kernel::::::::	1	OR	4.18	4.18.13
cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::	1	OR
cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::	1	OR
cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::	1	OR
cpe:2.3:o:canonical:ubuntu_linux:18.10:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux_server:7.0:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux_server:7.6:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:::::::*	1	OR

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
3.0

Vector String
CVSS:3.0/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://github.com/torvalds/linux/commit/b799207e1e1816b09e7a5920fbb2d5fcf6edd681	Patch Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.13	Release Notes Patch Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.75	Release Notes Patch Third Party Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=1686	Issue Tracking Patch Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b799207e1e1816b09e7a5920fbb2d5fcf6edd681	Patch Third Party Advisory
https://usn.ubuntu.com/3832-1/	Third Party Advisory
https://usn.ubuntu.com/3835-1/	Third Party Advisory
https://usn.ubuntu.com/3847-3/	Third Party Advisory
https://usn.ubuntu.com/3847-2/	Third Party Advisory
https://usn.ubuntu.com/3847-1/	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0514	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0512	Third Party Advisory
https://support.f5.com/csp/article/K38456756

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2018-18445
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18445

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 17:08:38				Added to TrackCVE
2022-12-03 13:35:18	2018-10-17T19:29Z	2018-10-17T19:29:00	CVE Published Date	updated
2022-12-03 13:35:18		2020-10-15T13:28:10	CVE Modified Date	updated
2022-12-03 13:35:18		Undergoing Analysis	Vulnerability Status	updated
2023-01-17 22:10:51		2023-01-17T21:34:37	CVE Modified Date	updated
2023-01-17 22:10:51	Undergoing Analysis	Analyzed	Vulnerability Status	updated