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CVE-2020-28928

Published: 24 November 2020

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).

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
musl
Launchpad, Ubuntu, Debian
bionic
Released (1.1.19-1ubuntu0.1~esm1)
focal
Released (1.1.24-1ubuntu0.1~esm1)
groovy Ignored
(reached end-of-life)
hirsute Ignored
(reached end-of-life)
impish Ignored
(reached end-of-life)
jammy Not vulnerable
(1.2.2-4)
kinetic Not vulnerable
(1.2.3-1)
lunar Not vulnerable
(1.2.3-1)
trusty
Released (0.9.15-1ubuntu0.1~esm2)
upstream Needs triage

xenial
Released (1.1.9-1ubuntu0.1~esm3)

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H