vulnerability

Amazon Linux 2023: CVE-2021-39537: Medium priority package update for ncurses

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Aug 4, 2020
Added
Feb 17, 2025
Modified
Jul 9, 2025

Description

An issue was discovered in ncurses through v6.2-1. _nc_captoinfo in captoinfo.c has a heap-based buffer overflow.
A heap overflow vulnerability has been found in the ncurses package, particularly in the "tic". This flaw results from a lack of proper bounds checking during input processing. By exploiting this boundary error, an attacker can create a malicious file, deceive the victim into opening it using the affected software, and initiate an out-of-bounds write, potentially impacting system availability.

Solutions

amazon-linux-2023-upgrade-ncursesamazon-linux-2023-upgrade-ncurses-baseamazon-linux-2023-upgrade-ncurses-c-libsamazon-linux-2023-upgrade-ncurses-c-libs-debuginfoamazon-linux-2023-upgrade-ncurses-compat-libsamazon-linux-2023-upgrade-ncurses-compat-libs-debuginfoamazon-linux-2023-upgrade-ncurses-debuginfoamazon-linux-2023-upgrade-ncurses-debugsourceamazon-linux-2023-upgrade-ncurses-develamazon-linux-2023-upgrade-ncurses-libsamazon-linux-2023-upgrade-ncurses-libs-debuginfoamazon-linux-2023-upgrade-ncurses-staticamazon-linux-2023-upgrade-ncurses-term
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