CVE-2020-28928 Information

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 Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

http://www.openwall.com/lists/oss-security/2020/11/20/4 https://musl.libc.org/releases.html https://lists.debian.org/debian-lts-announce/2020/11/msg00050.html https://lists.apache.org/thread.html/r90b60cf49348e515257b4950900c1bd3ab95a960cf2469d919c7264e@%3Cnotifications.apisix.apache.org%3E https://lists.apache.org/thread.html/ra63e8dc5137d952afc55dbbfa63be83304ecf842d1eab1ff3ebb29e2@%3Cnotifications.apisix.apache.org%3E https://lists.apache.org/thread.html/r2134abfe847bea7795f0e53756d10a47e6643f35ab8169df8b8a9eb1@%3Cnotifications.apisix.apache.org%3E https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UW27QVY7ERPTSGKS4KAWE5TU7EJWHKVQ/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LKQ3RVSMVZNZNO4D65W2CZZ4DMYFZN2Q/ https://www.oracle.com//security-alerts/cpujul2021.html https://www.oracle.com/security-alerts/cpuoct2021.html

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5