#VU85085 Out-of-bounds write in GTKWave - CVE-2023-39443

Vulnerability identifier: #VU85085

Vulnerability risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-39443

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GTKWave
Client/Desktop applications / Multimedia software

Vendor: gtkwave

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error in string copy loop during LXT2 lxt2_rd_get_facname decompression. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software, trigger an out-of-bounds write and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

GTKWave: 3.3.90 - 3.3.117

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External links
http://talosintelligence.com/vulnerability_reports/TALOS-2023-1826

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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.