Remote code execution in PowerISO

1) Out-of-bounds write

EUVDB-ID: #VU54424

Risk: High

CVSSv3.1: 8.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-21871

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in the DMG File Format Handler functionality. A remote attacker can create a specially crafted DMG file, trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

PowerISO: 7.9

External links

http://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1308

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.