Multiple vulnerabilities in rutantan zephyr

1) Buffer overflow

EUVDB-ID: #VU34391

Risk: Medium

CVSSv3.1: 5.9 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-10023

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a local non-authenticated attacker to execute arbitrary code.

The shell subsystem contains a buffer overflow, whereby an adversary with physical access to the device is able to cause a memory corruption, resulting in denial of service or possibly code execution within the Zephyr kernel. See NCC-NCC-019 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions.

Mitigation

Install update from vendor's website.

Vulnerable software versions

zephyr: 1.14.1 - 2.1.0

External links

http://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10023
http://github.com/zephyrproject-rtos/zephyr/pull/23304
http://github.com/zephyrproject-rtos/zephyr/pull/23646
http://github.com/zephyrproject-rtos/zephyr/pull/23649
http://zephyrprojectsec.atlassian.net/browse/ZEPSEC-29

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.

2) Incorrect Comparison

EUVDB-ID: #VU34392

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-2020-10024

CWE-ID: CWE-697 - Incorrect Comparison

Exploit availability: No

Description

The vulnerability allows a local authenticated user to execute arbitrary code.

The arm platform-specific code uses a signed integer comparison when validating system call numbers. An attacker who has obtained code execution within a user thread is able to elevate privileges to that of the kernel. See NCC-ZEP-001 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions.

Mitigation

Install update from vendor's website.

Vulnerable software versions

zephyr: 1.14.2 - 2.1.0

External links

http://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10024
http://github.com/zephyrproject-rtos/zephyr/pull/23323
http://github.com/zephyrproject-rtos/zephyr/pull/23498
http://github.com/zephyrproject-rtos/zephyr/pull/23535
http://zephyrprojectsec.atlassian.net/browse/ZEPSEC-30

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) Incorrect Comparison

EUVDB-ID: #VU34393

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-2020-10027

CWE-ID: CWE-697 - Incorrect Comparison

Exploit availability: No

Description

The vulnerability allows a local authenticated user to execute arbitrary code.

An attacker who has obtained code execution within a user thread is able to elevate privileges to that of the kernel. See NCC-ZEP-001 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions.

Mitigation

Install update from vendor's website.

Vulnerable software versions

zephyr: 1.14.0 - 2.1.0

External links

http://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10027
http://github.com/zephyrproject-rtos/zephyr/pull/23328
http://github.com/zephyrproject-rtos/zephyr/pull/23499
http://github.com/zephyrproject-rtos/zephyr/pull/23500
http://zephyrprojectsec.atlassian.net/browse/ZEPSEC-35

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) Input validation error

EUVDB-ID: #VU34394

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-2020-10028

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local authenticated user to execute arbitrary code.

Multiple syscalls with insufficient argument validation See NCC-ZEP-006 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions.

Mitigation

Install update from vendor's website.

Vulnerable software versions

zephyr: 1.14.0 - 2.1.0

External links

http://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10028
http://github.com/zephyrproject-rtos/zephyr/pull/23308
http://github.com/zephyrproject-rtos/zephyr/pull/23733
http://github.com/zephyrproject-rtos/zephyr/pull/23737
http://zephyrprojectsec.atlassian.net/browse/ZEPSEC-32

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) Input validation error

EUVDB-ID: #VU34395

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-2020-10058

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local authenticated user to execute arbitrary code.

Multiple syscalls in the Kscan subsystem perform insufficient argument validation, allowing code executing in userspace to potentially gain elevated privileges. See NCC-ZEP-006 This issue affects: zephyrproject-rtos zephyr version 2.1.0 and later versions.

Mitigation

Install update from vendor's website.

Vulnerable software versions

zephyr: 2.1.0

External links

http://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10058
http://github.com/zephyrproject-rtos/zephyr/pull/23308
http://github.com/zephyrproject-rtos/zephyr/pull/23748
http://zephyrprojectsec.atlassian.net/browse/ZEPSEC-34

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) Integer overflow

EUVDB-ID: #VU34398

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-2020-10067

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a local authenticated user to execute arbitrary code.

A malicious userspace application can cause a integer overflow and bypass security checks performed by system call handlers. The impact would depend on the underlying system call and can range from denial of service to information leak to memory corruption resulting in code execution within the kernel. See NCC-ZEP-005 This issue affects: zephyrproject-rtos zephyr version 1.14.1 and later versions. version 2.1.0 and later versions.

Mitigation

Install update from vendor's website.

Vulnerable software versions

zephyr: 1.14.1 - 2.1.0

External links

http://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10067
http://github.com/zephyrproject-rtos/zephyr/pull/23239
http://github.com/zephyrproject-rtos/zephyr/pull/23653
http://github.com/zephyrproject-rtos/zephyr/pull/23654
http://zephyrprojectsec.atlassian.net/browse/ZEPSEC-27

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.