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CVE-2018-19217

Publication date 12 November 2018

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

** DISPUTED ** In ncurses, possibly a 6.x version, there is a NULL pointer dereference at the function _nc_name_match that will lead to a denial of service attack. NOTE: the original report stated version 6.1, but the issue did not reproduce for that version according to the maintainer or a reliable third-party.

Read the notes from the security team

Status

Package Ubuntu Release Status
ncurses 22.04 LTS jammy
Not affected
21.10 impish
Not affected
21.04 hirsute
Not affected
20.10 groovy
Not affected
20.04 LTS focal
Not affected
19.10 eoan
Not affected
19.04 disco
Not affected
18.10 cosmic
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
14.04 LTS trusty

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Notes

ccdm94

for xenial and trusty the issue reproduces for the release version of the package with the provided POC file. However, patches applied to fix the CVE group CVE-2017-137xx and the CVE group CVE-2017-1068x have most likely fixed the currently considered vulnerability as well, with the reproducer no longer causing a segmentation fault for versions of the package that include these patches. This means that within the fixes present in the already applied patches was the fix for this CVE as well.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
ncurses

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:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H