Out-of-bounds write in Oracle ZFS Storage Appliance Kit

1) Out-of-bounds write

EUVDB-ID: #VU54224

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-2021-3517

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 xml entity encoding functionality. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Oracle ZFS Storage Appliance Kit: 8.8

CPE2.3

• cpe:2.3:a:oracle:oracle_zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*

External links

https://www.oracle.com/security-alerts/cpujan2022.html?833274

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.