Integer underflow in dxflib - CVE-2021-21897
Published: September 8, 2021
Vulnerability identifier: #VU56392
CSH Severity: High
CVSS v4: 8.6 [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]
CVE-ID: CVE-2021-21897
CWE-ID: CWE-191
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer underflow in the DL_Dxf::handleLWPolylineData functionality. A remote attacker can use a specially crafted .dxf file, trigger integer underflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
dxflib
Fedora
cloudcompare
libdxflib
Fedora
cloudcompare
libdxflib
How to mitigate CVE-2021-21897
Install updates from vendor's website.
dxflib - update to 3.26.4
cloudcompare - addressed in versions 2.9.1-16.fc35, 2.11.3-4.fc36, 2.11.3-4.fc37, 2.11.3-4.fc38
libdxflib - update to 3.26.4-2.fc36
cloudcompare - addressed in versions 2.9.1-16.fc35, 2.11.3-4.fc36, 2.11.3-4.fc37, 2.11.3-4.fc38
libdxflib - update to 3.26.4-2.fc36