CVE-2020-25579
First published: Fri Mar 26 2021(Updated: )
In FreeBSD 12.2-STABLE before r368969, 11.4-STABLE before r369047, 12.2-RELEASE before p3, 12.1-RELEASE before p13 and 11.4-RELEASE before p7 msdosfs(5) was failing to zero-fill a pair of padding fields in the dirent structure, resulting in a leak of three uninitialized bytes.
Credit: secteam@freebsd.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FreeBSD FreeBSD | =11.4 | |
| FreeBSD FreeBSD | =11.4-p1 | |
| FreeBSD FreeBSD | =11.4-p2 | |
| FreeBSD FreeBSD | =11.4-p3 | |
| FreeBSD FreeBSD | =11.4-p4 | |
| FreeBSD FreeBSD | =11.4-p5 | |
| FreeBSD FreeBSD | =11.4-p6 | |
| FreeBSD FreeBSD | =12.1 | |
| FreeBSD FreeBSD | =12.1-p1 | |
| FreeBSD FreeBSD | =12.1-p10 | |
| FreeBSD FreeBSD | =12.1-p11 | |
| FreeBSD FreeBSD | =12.1-p12 | |
| FreeBSD FreeBSD | =12.1-p2 | |
| FreeBSD FreeBSD | =12.1-p3 | |
| FreeBSD FreeBSD | =12.1-p4 | |
| FreeBSD FreeBSD | =12.1-p5 | |
| FreeBSD FreeBSD | =12.1-p6 | |
| FreeBSD FreeBSD | =12.1-p7 | |
| FreeBSD FreeBSD | =12.1-p8 | |
| FreeBSD FreeBSD | =12.1-p9 | |
| FreeBSD FreeBSD | =12.2 | |
| FreeBSD FreeBSD | =12.2-p1 | |
| FreeBSD FreeBSD | =12.2-p2 |
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Reference Links
Frequently Asked Questions
What is CVE-2020-25579?
CVE-2020-25579 is a vulnerability in FreeBSD that allows for a leak of uninitialized bytes due to a failure to zero-fill padding fields in the dirent structure.
How does CVE-2020-25579 affect FreeBSD?
CVE-2020-25579 affects FreeBSD versions 12.2-STABLE before r368969, 11.4-STABLE before r369047, 12.2-RELEASE before p3, 12.1-RELEASE before p13, and 11.4-RELEASE before p7.
What is the severity of CVE-2020-25579?
The severity of CVE-2020-25579 is medium with a CVSS score of 5.3.
How do I fix CVE-2020-25579?
To fix CVE-2020-25579, users should update their FreeBSD installations to the appropriate patched versions.
Where can I find more information about CVE-2020-25579?
More information about CVE-2020-25579 can be found in the FreeBSD Security Advisory and the NetApp Security Advisory.
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