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).
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://www.openwall.com/lists/oss-security/2020/11/20/4Mailing List, Third Party Advisory
- https://lists.apache.org/thread.html/r2134abfe847bea7795f0e53756d10a47e6643f35ab8169df8b8a9eb1%40%3Cnotifications.apisix.apache.org%3E
- https://lists.apache.org/thread.html/r90b60cf49348e515257b4950900c1bd3ab95a960cf2469d919c7264e%40%3Cnotifications.apisix.apache.org%3E
- https://lists.apache.org/thread.html/ra63e8dc5137d952afc55dbbfa63be83304ecf842d1eab1ff3ebb29e2%40%3Cnotifications.apisix.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2020/11/msg00050.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKQ3RVSMVZNZNO4D65W2CZZ4DMYFZN2Q/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UW27QVY7ERPTSGKS4KAWE5TU7EJWHKVQ/
- https://musl.libc.org/releases.htmlRelease Notes, Vendor Advisory
- https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/11/20/4Mailing List, Third Party Advisory
- https://lists.apache.org/thread.html/r2134abfe847bea7795f0e53756d10a47e6643f35ab8169df8b8a9eb1%40%3Cnotifications.apisix.apache.org%3E
- https://lists.apache.org/thread.html/r90b60cf49348e515257b4950900c1bd3ab95a960cf2469d919c7264e%40%3Cnotifications.apisix.apache.org%3E
- https://lists.apache.org/thread.html/ra63e8dc5137d952afc55dbbfa63be83304ecf842d1eab1ff3ebb29e2%40%3Cnotifications.apisix.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2020/11/msg00050.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKQ3RVSMVZNZNO4D65W2CZZ4DMYFZN2Q/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UW27QVY7ERPTSGKS4KAWE5TU7EJWHKVQ/
- https://musl.libc.org/releases.htmlRelease Notes, Vendor Advisory
- https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory
Timeline
- Published
- Nov 24, 2020
- Last modified
- Jun 17, 2026
- NVD status
- Modified