CVE-2023-50495

Publication date 12 December 2023

Last updated 19 August 2025

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

NCurse v6.4-20230418 was discovered to contain a segmentation fault via the component _nc_wrap_entry().

Read the notes from the security team

Why is this CVE low priority?

no security impact as terminfo files are trusted

Learn more about Ubuntu priority

Status

Package Ubuntu Release Status
ncurses 25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored end of life, was needed
22.04 LTS jammy
Vulnerable
20.04 LTS focal
Vulnerable
18.04 LTS bionic
Fixed 6.1-1ubuntu1.18.04.1+esm2
16.04 LTS xenial
Fixed 6.0+20160213-1ubuntu1+esm5
14.04 LTS trusty
Fixed 5.9+20140118-1ubuntu1+esm5

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro 30-day free trial

Notes

mdeslaur

This is in the code that parses terminfo database files. terminfo files are normally trusted, and since the fix for CVE-2023-29491, we no longer parse terminfo files when apps are setuid. As such, this doesn't really have a security impact. Setting priority to low.

Severity score breakdown

Parameter Value
Base score 6.5 · Medium
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H