#VU83998 Heap-based buffer overflow in Informix Dynamic Server - CVE-2023-28523

Vulnerability identifier: #VU83998

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-2023-28523

CWE-ID: CWE-122

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Informix Dynamic Server
Server applications / Web servers

Vendor: IBM Corporation

Description

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

The vulnerability exists due to a boundary error in IBM Informix onsmsync. A local user can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Informix Dynamic Server: before 14.10.FC10W1

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External links
https://www.ibm.com/support/pages/node/7070188

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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.