NULL pointer dereference in rutantan zephyr



| Updated: 2020-08-08
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-1000800
CWE-ID CWE-476
Exploitation vector Network
Public exploit N/A
Vulnerable software
 zephyr
Other software / Other software solutions

Vendor rutantan

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU36724

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-1000800

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

zephyr-rtos version 1.12.0 contains a NULL base pointer reference vulnerability in sys_ring_buf_put(), sys_ring_buf_get() that can result in CPU Page Fault (error code 0x00000010). This attack appear to be exploitable via a malicious application call the vulnerable kernel APIs (system sys_ring_buf_get() and sys_ring_buf_put).

Mitigation

Install update from vendor's website.

Vulnerable software versions

zephyr: 1.12.0

CPE2.3 External links

https://github.com/zephyrproject-rtos/zephyr/issues/7638


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.



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