Buffer overflow in libdxfrw - CVE-2021-21899
Published: June 1, 2022 / Updated: December 19, 2022
Vulnerability identifier: #VU63893
CSH Severity: High
CVSS v4.0: 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-2021-21899
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Affected software:
libdxfrw
Debian Linux
Gentoo Linux
Fedora
Ubuntu
librecad (Ubuntu package)
libdxfrw
media-gfx/librecad
librecad (Debian package)
librecad
libdxfrw
Debian Linux
Gentoo Linux
Fedora
Ubuntu
librecad (Ubuntu package)
libdxfrw
media-gfx/librecad
librecad (Debian package)
librecad
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to a boundary error in the dwgCompressor::copyCompBytes21 function. A remote attacker can trick the victim into opening a specially crafted .dwg file, trigger heap buffer overflow, and execute arbitrary code on the target system.
How to mitigate CVE-2021-21899
Install update from vendor's website.