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CVE-2021-39537

Published: 20 September 2021

An issue was discovered in ncurses through v6.2-1. _nc_captoinfo in captoinfo.c has a heap-based buffer overflow.

Notes

AuthorNote
mdeslaur
read of size 1, DoS only

Priority

Negligible

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
ncurses
Launchpad, Ubuntu, Debian
bionic
Released (6.1-1ubuntu1.18.04.1)
focal
Released (6.2-0ubuntu2.1)
impish Not vulnerable
(6.2+20201114-2build1)
kinetic Not vulnerable
(6.3-2)
lunar Not vulnerable
(6.3-2)
trusty
Released (5.9+20140118-1ubuntu1+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (6.0+20160213-1ubuntu1+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
hirsute Ignored
(end of life)
jammy Not vulnerable
(6.3-2)
upstream
Released (6.2-20200531, 6.3)
Patches:
upstream: https://github.com/mirror/ncurses/commit/790a85dbd4a81d5f5d8dd02a44d84f01512ef443

Severity score breakdown

Parameter Value
Base score 8.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H