Use-after-free in libdxfrw - CVE-2021-21900
Published: June 1, 2022 / Updated: December 19, 2022
Vulnerability identifier: #VU63895
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:N/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-2021-21900
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
libdxfrw
libdxfrw
Software vendor:
LibreCad
LibreCad
Description
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to a use-after-free error in the dxfRW::processLType() function. A remote attacker can trick the victim into opening a specially crafted .dwg file, trigger use-after-free, and execute arbitrary code on the target system.
Remediation
Install update from vendor's website.