Advisory Published

USN-6451-1: ncurses vulnerability

First published: Tue Oct 24 2023(Updated: )

It was discovered that ncurses could be made to read out of bounds. An attacker could possibly use this issue to cause a denial of service.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/lib32ncurses5<6.1-1ubuntu1.18.04.1+esm1
6.1-1ubuntu1.18.04.1+esm1
Ubuntu=18.04
All of
ubuntu/lib32ncursesw5<6.1-1ubuntu1.18.04.1+esm1
6.1-1ubuntu1.18.04.1+esm1
Ubuntu=18.04
All of
ubuntu/lib32tinfo5<6.1-1ubuntu1.18.04.1+esm1
6.1-1ubuntu1.18.04.1+esm1
Ubuntu=18.04
All of
ubuntu/lib64ncurses5<6.1-1ubuntu1.18.04.1+esm1
6.1-1ubuntu1.18.04.1+esm1
Ubuntu=18.04
All of
ubuntu/lib64tinfo5<6.1-1ubuntu1.18.04.1+esm1
6.1-1ubuntu1.18.04.1+esm1
Ubuntu=18.04
All of
ubuntu/libncurses5<6.1-1ubuntu1.18.04.1+esm1
6.1-1ubuntu1.18.04.1+esm1
Ubuntu=18.04
All of
ubuntu/libncursesw5<6.1-1ubuntu1.18.04.1+esm1
6.1-1ubuntu1.18.04.1+esm1
Ubuntu=18.04
All of
ubuntu/libtinfo5<6.1-1ubuntu1.18.04.1+esm1
6.1-1ubuntu1.18.04.1+esm1
Ubuntu=18.04
All of
ubuntu/libx32ncurses5<6.1-1ubuntu1.18.04.1+esm1
6.1-1ubuntu1.18.04.1+esm1
Ubuntu=18.04
All of
ubuntu/libx32ncursesw5<6.1-1ubuntu1.18.04.1+esm1
6.1-1ubuntu1.18.04.1+esm1
Ubuntu=18.04
All of
ubuntu/libx32tinfo5<6.1-1ubuntu1.18.04.1+esm1
6.1-1ubuntu1.18.04.1+esm1
Ubuntu=18.04
All of
ubuntu/ncurses-bin<6.1-1ubuntu1.18.04.1+esm1
6.1-1ubuntu1.18.04.1+esm1
Ubuntu=18.04
All of
ubuntu/lib32ncurses5<6.0+20160213-1ubuntu1+esm4
6.0+20160213-1ubuntu1+esm4
Ubuntu=16.04
All of
ubuntu/lib32ncursesw5<6.0+20160213-1ubuntu1+esm4
6.0+20160213-1ubuntu1+esm4
Ubuntu=16.04
All of
ubuntu/lib32tinfo5<6.0+20160213-1ubuntu1+esm4
6.0+20160213-1ubuntu1+esm4
Ubuntu=16.04
All of
ubuntu/lib64ncurses5<6.0+20160213-1ubuntu1+esm4
6.0+20160213-1ubuntu1+esm4
Ubuntu=16.04
All of
ubuntu/lib64tinfo5<6.0+20160213-1ubuntu1+esm4
6.0+20160213-1ubuntu1+esm4
Ubuntu=16.04
All of
ubuntu/libncurses5<6.0+20160213-1ubuntu1+esm4
6.0+20160213-1ubuntu1+esm4
Ubuntu=16.04
All of
ubuntu/libncursesw5<6.0+20160213-1ubuntu1+esm4
6.0+20160213-1ubuntu1+esm4
Ubuntu=16.04
All of
ubuntu/libtinfo5<6.0+20160213-1ubuntu1+esm4
6.0+20160213-1ubuntu1+esm4
Ubuntu=16.04
All of
ubuntu/libx32ncurses5<6.0+20160213-1ubuntu1+esm4
6.0+20160213-1ubuntu1+esm4
Ubuntu=16.04
All of
ubuntu/libx32ncursesw5<6.0+20160213-1ubuntu1+esm4
6.0+20160213-1ubuntu1+esm4
Ubuntu=16.04
All of
ubuntu/libx32tinfo5<6.0+20160213-1ubuntu1+esm4
6.0+20160213-1ubuntu1+esm4
Ubuntu=16.04
All of
ubuntu/ncurses-bin<6.0+20160213-1ubuntu1+esm4
6.0+20160213-1ubuntu1+esm4
Ubuntu=16.04
All of
ubuntu/lib32ncurses5<5.9+20140118-1ubuntu1+esm4
5.9+20140118-1ubuntu1+esm4
Ubuntu=14.04
All of
ubuntu/lib32ncursesw5<5.9+20140118-1ubuntu1+esm4
5.9+20140118-1ubuntu1+esm4
Ubuntu=14.04
All of
ubuntu/lib32tinfo5<5.9+20140118-1ubuntu1+esm4
5.9+20140118-1ubuntu1+esm4
Ubuntu=14.04
All of
ubuntu/lib64ncurses5<5.9+20140118-1ubuntu1+esm4
5.9+20140118-1ubuntu1+esm4
Ubuntu=14.04
All of
ubuntu/lib64tinfo5<5.9+20140118-1ubuntu1+esm4
5.9+20140118-1ubuntu1+esm4
Ubuntu=14.04
All of
ubuntu/libncurses5<5.9+20140118-1ubuntu1+esm4
5.9+20140118-1ubuntu1+esm4
Ubuntu=14.04
All of
ubuntu/libncursesw5<5.9+20140118-1ubuntu1+esm4
5.9+20140118-1ubuntu1+esm4
Ubuntu=14.04
All of
ubuntu/libtinfo5<5.9+20140118-1ubuntu1+esm4
5.9+20140118-1ubuntu1+esm4
Ubuntu=14.04
All of
ubuntu/libx32ncurses5<5.9+20140118-1ubuntu1+esm4
5.9+20140118-1ubuntu1+esm4
Ubuntu=14.04
All of
ubuntu/libx32ncursesw5<5.9+20140118-1ubuntu1+esm4
5.9+20140118-1ubuntu1+esm4
Ubuntu=14.04
All of
ubuntu/libx32tinfo5<5.9+20140118-1ubuntu1+esm4
5.9+20140118-1ubuntu1+esm4
Ubuntu=14.04
All of
ubuntu/ncurses-bin<5.9+20140118-1ubuntu1+esm4
5.9+20140118-1ubuntu1+esm4
Ubuntu=14.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID USN-6451-1 about?

    The vulnerability ID USN-6451-1 relates to ncurses in Ubuntu, where it can read out of bounds, potentially leading to a denial of service.

  • What is the severity of USN-6451-1?

    The severity of USN-6451-1 is assessed as high due to the potential impact on system stability and availability.

  • How do I fix USN-6451-1?

    To fix USN-6451-1, update the affected packages to the recommended version 6.1-1ubuntu1.18.04.1+esm1 or higher.

  • Which Ubuntu versions are affected by USN-6451-1?

    USN-6451-1 affects Ubuntu 18.04 and earlier versions that include the vulnerable ncurses packages.

  • Can USN-6451-1 be exploited remotely?

    Yes, USN-6451-1 could potentially be exploited remotely, enabling attackers to cause a denial of service.

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