Vulnerability identifier: #VU15742

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-18439

CWE-ID: CWE-120

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
U-Boot
Client/Desktop applications / Other client software

Vendor: DENX

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

The weakness exists in U-Boot open-source bootloader for embedded devices due to boundary error in the filesystem image load feature when handling malicious input. A remote attacker can trick the victim into loading a specially crafted image, trigger memory corruption and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Install update from vendor's website.

Vulnerable software versions

U-Boot: All versions

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External links
http://github.com/inversepath/usbarmory/blob/master/software/secure_boot/Security_Advisory-Ref_IPVR...

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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.