CVE-2019-20021
MEDIUMCVSS 5.5/10EPSS 1.10%
Last modified
CVE-2019-20021 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A heap-based buffer over-read was discovered in canUnpack in p_mach.cpp in UPX 3.95 via a crafted Mach-O file.. EPSS estimates a 1.10% chance of exploitation in the next 30 days.
Description
A heap-based buffer over-read was discovered in canUnpack in p_mach.cpp in UPX 3.95 via a crafted Mach-O file.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Upx | Upx | 3.95 |
| Fedoraproject | Fedora | 30 |
| Fedoraproject | Fedora | 31 |
References
- https://github.com/upx/upx/issues/315Exploit, Issue Tracking, Third Party Advisory
- https://github.com/upx/upx/issues/315Exploit, Issue Tracking, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-20021?
A heap-based buffer over-read was discovered in canUnpack in p_mach.cpp in UPX 3.95 via a crafted Mach-O file.
How severe is CVE-2019-20021?
CVE-2019-20021 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.10% probability of exploitation in the next 30 days.
How do I fix CVE-2019-20021?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2019-20021?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST