#VU77700 Out-of-bounds write in illumos-gate - CVE-2023-31284

Vulnerability identifier: #VU77700

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-31284

CWE-ID: CWE-787

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
illumos-gate
Operating systems & Components / Operating system

Vendor: illumos

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in /dev/net when handling an overly long filename. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

illumos-gate: All versions

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External links
https://github.com/illumos/illumos-gate/tree/16b76d3cb933ff92018a2a75594449010192eacb
https://illumos.topicbox.com/groups/developer/T13ef186a53edeb5c-M821cc18b5884e04e16daa8fd/cve-2023-31284-buffer-overflow-in-dev-net

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.