Amazon Linux AMI update for ncurses

1) Buffer overflow

EUVDB-ID: #VU75141

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-29491

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing malformed data in a terminfo database file. A local user can trigger memory corruption and execute arbitrary code on the target system.

Mitigation

Update the affected packages:

i686:
    ncurses-devel-5.7-4.20090207.15.amzn1.i686
    ncurses-libs-5.7-4.20090207.15.amzn1.i686
    ncurses-debuginfo-5.7-4.20090207.15.amzn1.i686
    ncurses-static-5.7-4.20090207.15.amzn1.i686
    ncurses-base-5.7-4.20090207.15.amzn1.i686
    ncurses-term-5.7-4.20090207.15.amzn1.i686
    ncurses-5.7-4.20090207.15.amzn1.i686

src:
    ncurses-5.7-4.20090207.15.amzn1.src

x86_64:
    ncurses-term-5.7-4.20090207.15.amzn1.x86_64
    ncurses-base-5.7-4.20090207.15.amzn1.x86_64
    ncurses-debuginfo-5.7-4.20090207.15.amzn1.x86_64
    ncurses-5.7-4.20090207.15.amzn1.x86_64
    ncurses-static-5.7-4.20090207.15.amzn1.x86_64
    ncurses-libs-5.7-4.20090207.15.amzn1.x86_64
    ncurses-devel-5.7-4.20090207.15.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

ncurses: before 5.7-4.20090207.15

CPE2.3

• cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
• cpe:2.3:o:amazon_web_services:ncurses:*:*:*:*:*:amazon_linux_ami:*:*

External links

https://alas.aws.amazon.com/ALAS-2023-1778.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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