Use After Free in 3mf Lib3mf
CVE-2021-21772
A use-after-free vulnerability exists in the NMR::COpcPackageReader::releaseZIP() functionality of 3MF Consortium lib3mf 2.0.0. A specially crafted 3MF file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.
Vulnerability class: Use-After-Free
EPSS: 0.042 (89.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- 3mf Lib3mf — versions 2.0.0
- Debian Debian_linux — versions 10.0
- Fedoraproject Fedora — versions 32, 33, 34
- N/a 3mf — versions 3MF Consortium lib3mf 2.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- talos-cna@cisco.com (Exploit, Third Party Advisory)
- talos-cna@cisco.com (vendor-advisory)
- talos-cna@cisco.com (vendor-advisory)
- talos-cna@cisco.com (vendor-advisory)
- talos-cna@cisco.com (vendor-advisory, Third Party Advisory)
- talos-cna@cisco.com (vendor-advisory, Third Party Advisory)
- talos-cna@cisco.com (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21772?
- CVE-2021-21772 is a high-severity vulnerability in 3mf Lib3mf, classified under Use After Free. CVSS score: 8.1/10. Published 2021-03-10.
- How severe is CVE-2021-21772?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2021-21772 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.