Double Free in DENX U-Boot

1) Double Free

EUVDB-ID: #VU19988

Risk: Critical

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-13105

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

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

The vulnerability exists due to the double free error in the "ext_cache_ini" when listing files in a crafted ext4 filesystem. A remote attacker can trigger double free error and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

U-Boot: 2019.07 rc1 - 2019.07 rc4

External links

http://gist.github.com/deephooloovoo/d91b81a1674b4750e662dfae93804d75
http://github.com/u-boot/u-boot/commits/master
http://lists.denx.de/pipermail/u-boot/2019-July/375513.html

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.