Vulnerability Description
In musl libc through 1.2.1, wcsnrtombs mishandles particular combinations of destination buffer size and source character limit, as demonstrated by an invalid write access (buffer overflow).
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Musl-Libc | Musl | <= 1.2.1 |
| Debian | Debian Linux | 9.0 |
| Fedoraproject | Fedora | 33 |
| Oracle | Graalvm | 20.3.2 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2020/11/20/4Mailing ListThird Party Advisory
- https://lists.apache.org/thread.html/r2134abfe847bea7795f0e53756d10a47e6643f35ab
- https://lists.apache.org/thread.html/r90b60cf49348e515257b4950900c1bd3ab95a960cf
- https://lists.apache.org/thread.html/ra63e8dc5137d952afc55dbbfa63be83304ecf842d1
- https://lists.debian.org/debian-lts-announce/2020/11/msg00050.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://musl.libc.org/releases.htmlRelease NotesVendor Advisory
- https://www.oracle.com//security-alerts/cpujul2021.htmlPatchThird Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.htmlPatchThird Party Advisory
- http://www.openwall.com/lists/oss-security/2020/11/20/4Mailing ListThird Party Advisory
- https://lists.apache.org/thread.html/r2134abfe847bea7795f0e53756d10a47e6643f35ab
- https://lists.apache.org/thread.html/r90b60cf49348e515257b4950900c1bd3ab95a960cf
- https://lists.apache.org/thread.html/ra63e8dc5137d952afc55dbbfa63be83304ecf842d1
- https://lists.debian.org/debian-lts-announce/2020/11/msg00050.htmlMailing ListThird Party Advisory
FAQ
What is CVE-2020-28928?
CVE-2020-28928 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In musl libc through 1.2.1, wcsnrtombs mishandles particular combinations of destination buffer size and source character limit, as demonstrated by an invalid write access (buffer overflow).
How severe is CVE-2020-28928?
CVE-2020-28928 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-28928?
Check the references section above for vendor advisories and patch information. Affected products include: Musl-Libc Musl, Debian Debian Linux, Fedoraproject Fedora, Oracle Graalvm.