Amazon Linux AMI update for ncurses

Published: 2024-08-06

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-39537 CVE-2022-29458
CWE-ID	CWE-787 CWE-125
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Amazon Linux AMI Operating systems & Components / Operating system ncurses Operating systems & Components / Operating system package or component
Vendor	Amazon Web Services

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU57577

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-39537

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Update the affected packages:

aarch64:
    ncurses-static-6.2-4.20200222.amzn2023.0.3.aarch64
    ncurses-compat-libs-debuginfo-6.2-4.20200222.amzn2023.0.3.aarch64
    ncurses-6.2-4.20200222.amzn2023.0.3.aarch64
    ncurses-libs-debuginfo-6.2-4.20200222.amzn2023.0.3.aarch64
    ncurses-libs-6.2-4.20200222.amzn2023.0.3.aarch64
    ncurses-c++-libs-debuginfo-6.2-4.20200222.amzn2023.0.3.aarch64
    ncurses-compat-libs-6.2-4.20200222.amzn2023.0.3.aarch64
    ncurses-c++-libs-6.2-4.20200222.amzn2023.0.3.aarch64
    ncurses-debuginfo-6.2-4.20200222.amzn2023.0.3.aarch64
    ncurses-debugsource-6.2-4.20200222.amzn2023.0.3.aarch64
    ncurses-devel-6.2-4.20200222.amzn2023.0.3.aarch64

noarch:
    ncurses-base-6.2-4.20200222.amzn2023.0.3.noarch
    ncurses-term-6.2-4.20200222.amzn2023.0.3.noarch

src:
    ncurses-6.2-4.20200222.amzn2023.0.3.src

x86_64:
    ncurses-static-6.2-4.20200222.amzn2023.0.3.x86_64
    ncurses-c++-libs-debuginfo-6.2-4.20200222.amzn2023.0.3.x86_64
    ncurses-debuginfo-6.2-4.20200222.amzn2023.0.3.x86_64
    ncurses-6.2-4.20200222.amzn2023.0.3.x86_64
    ncurses-compat-libs-6.2-4.20200222.amzn2023.0.3.x86_64
    ncurses-libs-debuginfo-6.2-4.20200222.amzn2023.0.3.x86_64
    ncurses-c++-libs-6.2-4.20200222.amzn2023.0.3.x86_64
    ncurses-compat-libs-debuginfo-6.2-4.20200222.amzn2023.0.3.x86_64
    ncurses-libs-6.2-4.20200222.amzn2023.0.3.x86_64
    ncurses-debugsource-6.2-4.20200222.amzn2023.0.3.x86_64
    ncurses-devel-6.2-4.20200222.amzn2023.0.3.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

ncurses: before 6.2-4.20200222

CPE2.3

External links

https://alas.aws.amazon.com/AL2023/ALAS-2023-023.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds read

EUVDB-ID: #VU64274

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-29458

CWE-ID: CWE-125 - Out-of-bounds read