Denial of service in ncurses



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-19189
CWE-ID CWE-787
Exploitation vector Local
Public exploit N/A
Vulnerable software
 ncurses
Universal components / Libraries / Libraries used by multiple products

Vendor Free Software Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Out-of-bounds write

EUVDB-ID: #VU82358

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-19189

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

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the postprocess_terminfo() function in tinfo/parse_entry. A local user can run a specially crafted command to trigger an out-of-bounds write and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

ncurses: All versions

CPE2.3 External links

https://github.com/zjuchenyuan/fuzzpoc/blob/master/infotocap_poc5.md
https://lists.debian.org/debian-lts-announce/2023/09/msg00033.html
https://security.netapp.com/advisory/ntap-20231006-0005/


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.



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