Ubuntu update for linux-azure

1) Improper access control

EUVDB-ID: #VU79371

Risk: Medium

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-25775

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to improper access restrictions in the Intel Ethernet Controller RDMA driver for Linux. A remote non-authenticated attacker can bypass implemented security restrictions and gain access to sensitive information.

Mitigation

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

Vulnerable software versions

Ubuntu: 22.04 - 23.04

linux-image-azure-fde (Ubuntu package): before 6.2.0.1017.17~22.04.1.14

linux-image-6.2.0-1017-azure-fde (Ubuntu package): before 6.2.0-1017.17~22.04.1.1

linux-image-gcp (Ubuntu package): before 6.2.0.1019.21~22.04.1

linux-image-azure (Ubuntu package): before 6.2.0.1017.17~22.04.1

linux-image-6.2.0-1019-gcp (Ubuntu package): before 6.2.0-1019.21~22.04.1

linux-image-6.2.0-1017-azure (Ubuntu package): before 6.2.0-1017.17~22.04.1

External links

http://ubuntu.com/security/notices/USN-6502-4

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

2) Division by zero

EUVDB-ID: #VU82660

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-2023-31085

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

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

The vulnerability exists due to a divide by zero error within the drivers/mtd/ubi/cdev.c driver. A local user can perform a denial of service (DoS) attack.

Mitigation

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

Vulnerable software versions

Ubuntu: 22.04 - 23.04

linux-image-azure-fde (Ubuntu package): before 6.2.0.1017.17~22.04.1.14

linux-image-6.2.0-1017-azure-fde (Ubuntu package): before 6.2.0-1017.17~22.04.1.1

linux-image-gcp (Ubuntu package): before 6.2.0.1019.21~22.04.1

linux-image-azure (Ubuntu package): before 6.2.0.1017.17~22.04.1

linux-image-6.2.0-1019-gcp (Ubuntu package): before 6.2.0-1019.21~22.04.1

linux-image-6.2.0-1017-azure (Ubuntu package): before 6.2.0-1017.17~22.04.1

External links

http://ubuntu.com/security/notices/USN-6502-4

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) Buffer overflow

EUVDB-ID: #VU83381

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-45871

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the IGB driver in drivers/net/ethernet/intel/igb/igb_main.c when handling frames larger than the MTU. A remote attacker can send specially crafted traffic to the system, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

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

Vulnerable software versions

Ubuntu: 22.04 - 23.04

linux-image-azure-fde (Ubuntu package): before 6.2.0.1017.17~22.04.1.14

linux-image-6.2.0-1017-azure-fde (Ubuntu package): before 6.2.0-1017.17~22.04.1.1

linux-image-gcp (Ubuntu package): before 6.2.0.1019.21~22.04.1

linux-image-azure (Ubuntu package): before 6.2.0.1017.17~22.04.1

linux-image-6.2.0-1019-gcp (Ubuntu package): before 6.2.0-1019.21~22.04.1

linux-image-6.2.0-1017-azure (Ubuntu package): before 6.2.0-1017.17~22.04.1

External links

http://ubuntu.com/security/notices/USN-6502-4

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

4) Improper handling of exceptional conditions

EUVDB-ID: #VU83383

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-2023-5090

CWE-ID: CWE-755 - Improper Handling of Exceptional Conditions

Exploit availability: No

Description

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

The vulnerability exists due to improper handling of errors within the svm_set_x2apic_msr_interception() function in KVM. A local user can send specially crafted input and perform a denial of service (DoS) attack.

Mitigation

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

Vulnerable software versions

Ubuntu: 22.04 - 23.04

linux-image-azure-fde (Ubuntu package): before 6.2.0.1017.17~22.04.1.14

linux-image-6.2.0-1017-azure-fde (Ubuntu package): before 6.2.0-1017.17~22.04.1.1

linux-image-gcp (Ubuntu package): before 6.2.0.1019.21~22.04.1

linux-image-azure (Ubuntu package): before 6.2.0.1017.17~22.04.1

linux-image-6.2.0-1019-gcp (Ubuntu package): before 6.2.0-1019.21~22.04.1

linux-image-6.2.0-1017-azure (Ubuntu package): before 6.2.0-1017.17~22.04.1

External links

http://ubuntu.com/security/notices/USN-6502-4

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) Use-after-free

EUVDB-ID: #VU81691

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-2023-5345

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 smb3_fs_context_parse_param() function in fs/smb/client component. A remote attacker can execute arbitrary code with elevated privileges.

Mitigation

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

Vulnerable software versions

Ubuntu: 22.04 - 23.04

linux-image-azure-fde (Ubuntu package): before 6.2.0.1017.17~22.04.1.14

linux-image-6.2.0-1017-azure-fde (Ubuntu package): before 6.2.0-1017.17~22.04.1.1

linux-image-gcp (Ubuntu package): before 6.2.0.1019.21~22.04.1

linux-image-azure (Ubuntu package): before 6.2.0.1017.17~22.04.1

linux-image-6.2.0-1019-gcp (Ubuntu package): before 6.2.0-1019.21~22.04.1

linux-image-6.2.0-1017-azure (Ubuntu package): before 6.2.0-1017.17~22.04.1

External links

http://ubuntu.com/security/notices/USN-6502-4

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.