Ubuntu update for apport

Published: 2022-05-18 | Updated: 2022-09-13

Risk	Low
Patch available	YES
Number of vulnerabilities	8
CVE-ID	CVE-2021-3899 CVE-2022-1242 CVE-2022-28652 CVE-2022-28654 CVE-2022-28655 CVE-2022-28656 CVE-2022-28657 CVE-2022-28658
CWE-ID	CWE-362 CWE-254 CWE-400 CWE-770 CWE-789 CWE-88
Exploitation vector	Local
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	Ubuntu Operating systems & Components / Operating system python3-apport (Ubuntu package) Operating systems & Components / Operating system package or component apport (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 8 vulnerabilities.

1) Race condition

EUVDB-ID: #VU63360

Risk: Low

CVSSv3.1: 7.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2021-3899

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

Exploit availability: Yes

Description

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

The vulnerability exists due to a race condition in the replaced executable detection. A local user can exploit the race and execute arbitrary code with root privileges.

Mitigation

Update the affected package apport to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 22.04

python3-apport (Ubuntu package): before 2.20.11-0ubuntu82.1

apport (Ubuntu package): before 2.20.11-0ubuntu82.1

External links

http://ubuntu.com/security/notices/USN-5427-1

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. However, proof of concept for this vulnerability is available.

2) Security features bypass

EUVDB-ID: #VU63362

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1242

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

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

The vulnerability exists due to incorrect handling of connections to Apport sockets inside containers. A local user can trick apport into connecting to arbitrary sockets as the root user.

Mitigation

Update the affected package apport to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 22.04

python3-apport (Ubuntu package): before 2.20.11-0ubuntu82.1

apport (Ubuntu package): before 2.20.11-0ubuntu82.1

External links

http://ubuntu.com/security/notices/USN-5427-1

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.

3) Resource exhaustion

EUVDB-ID: #VU63365

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-28652

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources when reading user settings files. A local user can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Update the affected package apport to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 22.04

python3-apport (Ubuntu package): before 2.20.11-0ubuntu82.1

apport (Ubuntu package): before 2.20.11-0ubuntu82.1

External links

http://ubuntu.com/security/notices/USN-5427-1

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) Allocation of Resources Without Limits or Throttling

EUVDB-ID: #VU63367

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-2022-28654

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

Exploit availability: No

Description

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

The vulnerability exists due to not limiting the amount of logging from D-Bus connections. A local user can fill up the Apport log file and cause denial of service.

Mitigation

Update the affected package apport to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 22.04

python3-apport (Ubuntu package): before 2.20.11-0ubuntu82.1

apport (Ubuntu package): before 2.20.11-0ubuntu82.1

External links

http://ubuntu.com/security/notices/USN-5427-1

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.

5) Security features bypass

EUVDB-ID: #VU63368

Risk: Low

CVSSv3.1: 3.3 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-28655

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to apport does not filter D-Bus connection strings. A local user can force apport to initiate arbitrary network connections.

Mitigation

Update the affected package apport to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 22.04

python3-apport (Ubuntu package): before 2.20.11-0ubuntu82.1

apport (Ubuntu package): before 2.20.11-0ubuntu82.1

External links

http://ubuntu.com/security/notices/USN-5427-1

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.

6) Uncontrolled Memory Allocation

EUVDB-ID: #VU63370

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-2022-28656

CWE-ID: CWE-789 - Uncontrolled Memory Allocation

Exploit availability: No

Description

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

The vulnerability exists due to RAM consumption in the is_closing_session() function in the Apport process. A local user can cause Apport to consume memory and cause a denial of service.

Mitigation

Update the affected package apport to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 22.04

python3-apport (Ubuntu package): before 2.20.11-0ubuntu82.1

apport (Ubuntu package): before 2.20.11-0ubuntu82.1

External links

http://ubuntu.com/security/notices/USN-5427-1

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.

7) Security features bypass

EUVDB-ID: #VU63371

Risk: Low

CVSSv3.1: 6.2 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-28657

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code with escalated privileges.

The vulnerability exists due to Apport does not disable the python crash handler before chrooting into a container. A local user can bypass implemented security restrictions and execute arbitrary code with escalated privileges.

Mitigation

Update the affected package apport to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 22.04

python3-apport (Ubuntu package): before 2.20.11-0ubuntu82.1

apport (Ubuntu package): before 2.20.11-0ubuntu82.1

External links

http://ubuntu.com/security/notices/USN-5427-1

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.

8) Improper Neutralization of Argument Delimiters in a Command

EUVDB-ID: #VU63373

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-28658

CWE-ID: CWE-88 - Argument Injection or Modification

Exploit availability: No

Description

The vulnerability allows a local user to spoof arguments.

The vulnerability exists due to Apport incorrectly handles filename argument whitespace. A local user can spoof arguments to the Apport daemon.

Mitigation

Update the affected package apport to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 22.04

python3-apport (Ubuntu package): before 2.20.11-0ubuntu82.1

apport (Ubuntu package): before 2.20.11-0ubuntu82.1

External links

http://ubuntu.com/security/notices/USN-5427-1

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.