CVE-2019-20021
First published: Fri Dec 27 2019(Updated: )
A heap-based buffer over-read was discovered in canUnpack in p_mach.cpp in UPX 3.95 via a crafted Mach-O file.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| UPX | =3.95 | |
| Fedora | =30 | |
| Fedora | =31 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.html
- https://github.com/upx/upx/issues/315
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/
Frequently Asked Questions
What is CVE-2019-20021?
CVE-2019-20021 is a vulnerability discovered in UPX 3.95 that allows a heap-based buffer over-read via a crafted Mach-O file.
What is the severity of CVE-2019-20021?
The severity of CVE-2019-20021 is medium with a CVSS score of 5.5.
Which software versions are affected by CVE-2019-20021?
UPX 3.95, Fedora 30, and Fedora 31 are affected by CVE-2019-20021.
How can the vulnerability be exploited?
The vulnerability can be exploited by providing a crafted Mach-O file to the canUnpack function in UPX 3.95.
Where can I find more information about CVE-2019-20021?
You can find more information about CVE-2019-20021 on the following references: [Reference 1](http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00003.html), [Reference 2](http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.html), and [Reference 3](https://github.com/upx/upx/issues/315).
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- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/references
- agent/last-modified-date
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- agent/first-publish-date
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- vendor/upx project
- canonical/upx
- version/upx/3.95
- vendor/fedoraproject
- canonical/fedora
- version/fedora/30
- version/fedora/31