Information disclosure in ncurses

1) 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

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in convert_strings in tinfo/read_entry.c in the terminfo library. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Install patch 20220416 from vendor's repository.

Vulnerable software versions

ncurses: 6.0 - 6.3

CPE2.3

• cpe:2.3:a:free_software_foundation:ncurses:6.0:*:*:*:*:*:*:*
• cpe:2.3:a:free_software_foundation:ncurses:6.1:*:*:*:*:*:*:*
• cpe:2.3:a:free_software_foundation:ncurses:6.1-20191012:*:*:*:*:*:*:*

External links

https://lists.gnu.org/archive/html/bug-ncurses/2022-04/msg00016.html
https://lists.gnu.org/archive/html/bug-ncurses/2022-04/msg00014.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.