Ubuntu update for linux-iot



Published: 2023-10-30
Risk Medium
Patch available YES
Number of vulnerabilities 8
CVE-ID CVE-2023-34319
CVE-2023-42752
CVE-2023-42753
CVE-2023-42755
CVE-2023-42756
CVE-2023-4622
CVE-2023-4623
CVE-2023-4921
CWE-ID CWE-119
CWE-190
CWE-787
CWE-125
CWE-362
CWE-416
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Ubuntu
Operating systems & Components / Operating system

linux-image-raspi2 (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-raspi (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-5.4.0-1096-raspi (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-5.4.0-1024-iot (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-raspi-hwe-18.04 (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 8 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU79260

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-34319

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in netback when processing certain packets. A malicious guest can send specially crafted packets to the backend, trigger memory corruption and crash the hypervisor.

Mitigation

Update the affected package linux-iot to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-raspi2 (Ubuntu package): before 5.4.0.1096.126

linux-image-raspi (Ubuntu package): before 5.4.0.1096.126

linux-image-5.4.0-1096-raspi (Ubuntu package): before Ubuntu Pro

linux-image-5.4.0-1024-iot (Ubuntu package): before 5.4.0-1024.25

linux-image-raspi-hwe-18.04 (Ubuntu package): before Ubuntu Pro

CPE2.3 External links

http://ubuntu.com/security/notices/USN-6441-3


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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

2) Integer overflow

EUVDB-ID: #VU80877

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-42752

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to integer overflow within the __alloc_skb() function. A local user can trigger integer overflow and crash the kernel.

Mitigation

Update the affected package linux-iot to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-raspi2 (Ubuntu package): before 5.4.0.1096.126

linux-image-raspi (Ubuntu package): before 5.4.0.1096.126

linux-image-5.4.0-1096-raspi (Ubuntu package): before Ubuntu Pro

linux-image-5.4.0-1024-iot (Ubuntu package): before 5.4.0-1024.25

linux-image-raspi-hwe-18.04 (Ubuntu package): before Ubuntu Pro

CPE2.3 External links

http://ubuntu.com/security/notices/USN-6441-3


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.

3) Out-of-bounds write

EUVDB-ID: #VU81663

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-42753

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in the netfilter subsystem in Linux kernel. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-iot to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-raspi2 (Ubuntu package): before 5.4.0.1096.126

linux-image-raspi (Ubuntu package): before 5.4.0.1096.126

linux-image-5.4.0-1096-raspi (Ubuntu package): before Ubuntu Pro

linux-image-5.4.0-1024-iot (Ubuntu package): before 5.4.0-1024.25

linux-image-raspi-hwe-18.04 (Ubuntu package): before Ubuntu Pro

CPE2.3 External links

http://ubuntu.com/security/notices/USN-6441-3


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.

4) Out-of-bounds read

EUVDB-ID: #VU82305

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-42755

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

Exploit availability: No

Description

The vulnerability allows a local user to perform denial of service (DoS) attack.

The vulnerability exists due to a boundary condition within the the IPv4 Resource Reservation Protocol (RSVP) classifier function in the Linux kernel. A local user can trigger an out-of-bounds read error and crash the Linux kernel.

Mitigation

Update the affected package linux-iot to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-raspi2 (Ubuntu package): before 5.4.0.1096.126

linux-image-raspi (Ubuntu package): before 5.4.0.1096.126

linux-image-5.4.0-1096-raspi (Ubuntu package): before Ubuntu Pro

linux-image-5.4.0-1024-iot (Ubuntu package): before 5.4.0-1024.25

linux-image-raspi-hwe-18.04 (Ubuntu package): before Ubuntu Pro

CPE2.3 External links

http://ubuntu.com/security/notices/USN-6441-3


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.

5) Race condition

EUVDB-ID: #VU81690

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-42756

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a race condition in the Netfilter subsystem. A local user can exploit the race  between IPSET_CMD_ADD and IPSET_CMD_SWAP and gain crash the kernel.

Mitigation

Update the affected package linux-iot to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-raspi2 (Ubuntu package): before 5.4.0.1096.126

linux-image-raspi (Ubuntu package): before 5.4.0.1096.126

linux-image-5.4.0-1096-raspi (Ubuntu package): before Ubuntu Pro

linux-image-5.4.0-1024-iot (Ubuntu package): before 5.4.0-1024.25

linux-image-raspi-hwe-18.04 (Ubuntu package): before Ubuntu Pro

CPE2.3 External links

http://ubuntu.com/security/notices/USN-6441-3


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.

6) Use-after-free

EUVDB-ID: #VU80583

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-4622

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the unix_stream_sendpage() function in af_unix component. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-iot to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-raspi2 (Ubuntu package): before 5.4.0.1096.126

linux-image-raspi (Ubuntu package): before 5.4.0.1096.126

linux-image-5.4.0-1096-raspi (Ubuntu package): before Ubuntu Pro

linux-image-5.4.0-1024-iot (Ubuntu package): before 5.4.0-1024.25

linux-image-raspi-hwe-18.04 (Ubuntu package): before Ubuntu Pro

CPE2.3 External links

http://ubuntu.com/security/notices/USN-6441-3


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.

7) Use-after-free

EUVDB-ID: #VU81664

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-4623

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the the Linux kernel net/sched: sch_hfsc (HFSC qdisc traffic control) component. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-iot to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-raspi2 (Ubuntu package): before 5.4.0.1096.126

linux-image-raspi (Ubuntu package): before 5.4.0.1096.126

linux-image-5.4.0-1096-raspi (Ubuntu package): before Ubuntu Pro

linux-image-5.4.0-1024-iot (Ubuntu package): before 5.4.0-1024.25

linux-image-raspi-hwe-18.04 (Ubuntu package): before Ubuntu Pro

CPE2.3 External links

http://ubuntu.com/security/notices/USN-6441-3


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.

8) Use-after-free

EUVDB-ID: #VU81693

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-4921

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error in the qfq_dequeue() function within the the Linux kernel's net/sched: sch_qfq component. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-iot to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-raspi2 (Ubuntu package): before 5.4.0.1096.126

linux-image-raspi (Ubuntu package): before 5.4.0.1096.126

linux-image-5.4.0-1096-raspi (Ubuntu package): before Ubuntu Pro

linux-image-5.4.0-1024-iot (Ubuntu package): before 5.4.0-1024.25

linux-image-raspi-hwe-18.04 (Ubuntu package): before Ubuntu Pro

CPE2.3 External links

http://ubuntu.com/security/notices/USN-6441-3


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.



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