#VU82359 Out-of-bounds write in Informix Dynamic Server - CVE-2020-4799

Vulnerability identifier: #VU82359

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-2020-4799

CWE-ID: CWE-787

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 compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input. A local user can create a specially crafted file, trigger an out-of-bounds write and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Informix Dynamic Server: 14.10

---

External links
https://exchange.xforce.ibmcloud.com/vulnerabilities/189460
https://www.ibm.com/support/pages/node/6343587

---

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.