Buffer overflow in DENX U-Boot

1) Buffer overflow

EUVDB-ID: #VU35641

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-2019-13104

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

In Das U-Boot versions 2016.11-rc1 through 2019.07-rc4, an underflow can cause memcpy() to overwrite a very large amount of data (including the whole stack) while reading a crafted ext4 filesystem.

Mitigation

Install update from vendor's website.

Vulnerable software versions

U-Boot: 2019.07

External links

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00004.html
http://gist.github.com/deephooloovoo/d91b81a1674b4750e662dfae93804d75
http://github.com/u-boot/u-boot/commits/master
http://lists.denx.de/pipermail/u-boot/2019-July/375514.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.