Ubuntu update for linux-oem-5.14



Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2021-33061
CVE-2021-33655
CWE-ID CWE-20
CWE-787
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

linux-image-oem-20.04c (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-oem-20.04b (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-oem-20.04d (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-5.14.0-1049-oem (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-oem-20.04 (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU60490

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-33061

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient control flow management. A local user can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-oem-5.14 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1049.45

linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1049.45

linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1049.45

linux-image-5.14.0-1049-oem (Ubuntu package): before 5.14.0-1049.56

linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1049.45

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5577-1


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) Out-of-bounds write

EUVDB-ID: #VU65833

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-2021-33655

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 FBIOPUT_VSCREENINFO IOCTL. A local user can trigger an out-of-bounds write error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-oem-5.14 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1049.45

linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1049.45

linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1049.45

linux-image-5.14.0-1049-oem (Ubuntu package): before 5.14.0-1049.56

linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1049.45

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5577-1


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.



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