Ubuntu update for linux-aws-5.19

Published: 2023-07-27 | Updated: 2024-12-18

Risk	Low
Patch available	YES
Number of vulnerabilities	9
CVE-ID	CVE-2022-48502 CVE-2023-2640 CVE-2023-3090 CVE-2023-31248 CVE-2023-3141 CVE-2023-32629 CVE-2023-3389 CVE-2023-3390 CVE-2023-35001
CWE-ID	CWE-125 CWE-264 CWE-787 CWE-416
Exploitation vector	Local
Public exploit	Public exploit code for vulnerability #2 is available. Public exploit code for vulnerability #6 is available. Public exploit code for vulnerability #9 is available.
Vulnerable software	Ubuntu Operating systems & Components / Operating system linux-image-gcp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-aws (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-lpae-hwe-22.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.19.0-1030-gcp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-64k-hwe-22.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.19.0-50-generic (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.19.0-50-generic-64k (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.19.0-50-generic-lpae (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-virtual-hwe-22.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-hwe-22.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.19.0-1029-aws (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 9 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU78725

Risk: Low

CVSSv4.0: 4.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-48502

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the ntfs_set_ea() function in fs/ntfs3/xattr.c in Linux kernel ntfs3 subsystem. A local user can trigger an out-of-bounds read error and read contents of memory on the system or crash the OS kernel.

Mitigation

Update the affected package linux-aws-5.19 to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-gcp (Ubuntu package): before 5.19.0.1030.32~22.04.2

linux-image-aws (Ubuntu package): before 5.19.0.1029.30~22.04.13

linux-image-generic-lpae-hwe-22.04 (Ubuntu package): before 5.19.0.50.22

linux-image-5.19.0-1030-gcp (Ubuntu package): before 5.19.0-1030.32~22.04.1

linux-image-generic-64k-hwe-22.04 (Ubuntu package): before 5.19.0.50.22

linux-image-5.19.0-50-generic (Ubuntu package): before 5.19.0-50.50

linux-image-5.19.0-50-generic-64k (Ubuntu package): before 5.19.0-50.50

linux-image-5.19.0-50-generic-lpae (Ubuntu package): before 5.19.0-50.50

linux-image-virtual-hwe-22.04 (Ubuntu package): before 5.19.0.50.22

linux-image-generic-hwe-22.04 (Ubuntu package): before 5.19.0.50.22

linux-image-5.19.0-1029-aws (Ubuntu package): before 5.19.0-1029.30~22.04.1

CPE2.3

External links

https://ubuntu.com/security/notices/USN-6260-1

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU78673

Risk: Low

CVSSv4.0: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear]

CVE-ID: CVE-2023-2640

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to missing permission checks for trusted.overlayfs.* xattrs". A local user can set privileged extended attributes on the mounted files, leading them to be set on the upper files without the appropriate security checks.