Ubuntu update for edk2



Risk Medium
Patch available YES
Number of vulnerabilities 10
CVE-ID CVE-2022-36763
CVE-2022-36764
CVE-2022-36765
CVE-2023-45230
CVE-2023-45234
CVE-2023-45235
CVE-2023-45231
CVE-2023-45232
CVE-2023-45233
CVE-2023-48733
CWE-ID CWE-190
CWE-119
CWE-125
CWE-835
CWE-276
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

qemu-efi (Ubuntu package)
Operating systems & Components / Operating system package or component

qemu-efi-arm (Ubuntu package)
Operating systems & Components / Operating system package or component

qemu-efi-aarch64 (Ubuntu package)
Operating systems & Components / Operating system package or component

ovmf (Ubuntu package)
Operating systems & Components / Operating system package or component

efi-shell-x64 (Ubuntu package)
Operating systems & Components / Operating system package or component

efi-shell-arm (Ubuntu package)
Operating systems & Components / Operating system package or component

efi-shell-aa64 (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 10 vulnerabilities.

1) Integer overflow

EUVDB-ID: #VU89083

Risk: Low

CVSSv4.0: 5.9 [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:U/U:Clear]

CVE-ID: CVE-2022-36763

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow within the Tcg2MeasureGptTable() function when reading untrusted input from the disk. A local user can set up a malicious GPT table to trigger an integer overflow and overwrite code from UEFI applications.

Mitigation

Update the affected package edk2 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 23.10

qemu-efi (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-arm (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-aarch64 (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

ovmf (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

efi-shell-x64 (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-arm (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-aa64 (Ubuntu package): before 2023.05-2ubuntu0.1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6638-1


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) Integer overflow

EUVDB-ID: #VU87737

Risk: Medium

CVSSv4.0: 5.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-36764

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow within the Tcg2MeasurePeImage() function. A remote attacker can pass specially crafted data to the application, trigger an integer overflow 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 edk2 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 23.10

qemu-efi (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-arm (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-aarch64 (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

ovmf (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

efi-shell-x64 (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-arm (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-aa64 (Ubuntu package): before 2023.05-2ubuntu0.1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6638-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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

3) Integer overflow

EUVDB-ID: #VU95180

Risk: Low

CVSSv4.0: 5.9 [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:U/U:Clear]

CVE-ID: CVE-2022-36765

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow within the CreateHob() function. A local user can trigger an integer overflow and execute arbitrary code on the target system.

Mitigation

Update the affected package edk2 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 23.10

qemu-efi (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-arm (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-aarch64 (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

ovmf (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

efi-shell-x64 (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-arm (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-aa64 (Ubuntu package): before 2023.05-2ubuntu0.1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6638-1


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.

4) Buffer overflow

EUVDB-ID: #VU85520

Risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-45230

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 within a long server ID option in DHCPv6 client. A remote attacker on the local network can 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 edk2 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 23.10

qemu-efi (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-arm (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-aarch64 (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

ovmf (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

efi-shell-x64 (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-arm (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-aa64 (Ubuntu package): before 2023.05-2ubuntu0.1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6638-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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

5) Buffer overflow

EUVDB-ID: #VU85525

Risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-45234

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 when processing DNS Servers option from a DHCPv6 Advertise message. A remote attacker on the local network can 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 edk2 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 23.10

qemu-efi (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-arm (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-aarch64 (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

ovmf (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

efi-shell-x64 (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-arm (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-aa64 (Ubuntu package): before 2023.05-2ubuntu0.1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6638-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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

6) Buffer overflow

EUVDB-ID: #VU85526

Risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-45235

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 when handling Server ID option from a DHCPv6 proxy Advertise message. A remote attacker on the local network can 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 edk2 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 23.10

qemu-efi (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-arm (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-aarch64 (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

ovmf (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

efi-shell-x64 (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-arm (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-aa64 (Ubuntu package): before 2023.05-2ubuntu0.1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6638-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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

7) Out-of-bounds read

EUVDB-ID: #VU85521

Risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-45231

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition when processing Neighbor Discovery Redirect message. A remote attacker on the local network can trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected package edk2 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 23.10

qemu-efi (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-arm (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-aarch64 (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

ovmf (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

efi-shell-x64 (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-arm (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-aa64 (Ubuntu package): before 2023.05-2ubuntu0.1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6638-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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

8) Infinite loop

EUVDB-ID: #VU85522

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-45232

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop when parsing unknown options in the Destination Options header of IPv6. A remote attacker can consume all available system resources and cause denial of service conditions.

Mitigation

Update the affected package edk2 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 23.10

qemu-efi (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-arm (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-aarch64 (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

ovmf (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

efi-shell-x64 (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-arm (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-aa64 (Ubuntu package): before 2023.05-2ubuntu0.1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6638-1


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.

9) Infinite loop

EUVDB-ID: #VU85523

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-45233

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop when parsing a PadN option in the Destination Options header of IPv6. A remote attacker can consume all available system resources and cause denial of service conditions.

Mitigation

Update the affected package edk2 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 23.10

qemu-efi (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-arm (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-aarch64 (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

ovmf (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

efi-shell-x64 (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-arm (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-aa64 (Ubuntu package): before 2023.05-2ubuntu0.1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6638-1


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.

10) Incorrect default permissions

EUVDB-ID: #VU95182

Risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-48733

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

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

The vulnerability exists due to incorrect default permissions on the UEFI Shell. A local user can bypass the Secure Boot and escalate privileges on the system.

Mitigation

Update the affected package edk2 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 23.10

qemu-efi (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-arm (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

qemu-efi-aarch64 (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

ovmf (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.5

efi-shell-x64 (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-arm (Ubuntu package): before 2023.05-2ubuntu0.1

efi-shell-aa64 (Ubuntu package): before 2023.05-2ubuntu0.1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6638-1


Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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