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Ubuntu 23.04: CVE-2023-6099 High: Ncurses DoS Vulnerability

ubuntu
Calendar Grey May 23, 2023
Dist Ubuntu Esm H88
Ubuntu's latest ncurses enhancements address critical security loopholes in multiple LTS editions. Ensure your systems remain protected.
Several security issues were fixed in ncurses.

Summary

Several security issues were fixed in ncurses.

Software Description:

- ncurses: shared libraries for terminal handling

Details:

It was discovered that ncurses was incorrectly performing bounds

checks when processing invalid hashcodes. An attacker could possibly

use this issue to cause a denial of service or to expose sensitive

information. This issue only affected Ubuntu 18.04 LTS.

(CVE-2019-17594)

It was discovered that ncurses was incorrectly handling

end-of-string characters when processing terminfo and termcap files.

An attacker could possibly use this issue to cause a denial of

service or to expose sensitive information. This issue only affected

Ubuntu 18.04 LTS. (CVE-2019-17595)

It was discovered that ncurses was incorrectly handling

end-of-string characters when converting between termcap and

terminfo formats. An attacker could possibly use this issue to cause

a denial of service or execute arbitrary code. This issue only

affected Ubuntu 18.04 LT...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical ncurses Ubuntu update instructions

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 23.04:
   lib32ncurses6                   6.4-2ubuntu0.1
   lib32ncursesw6                  6.4-2ubuntu0.1
   lib32tinfo6                     6.4-2ubuntu0.1
   lib64ncurses6                   6.4-2ubuntu0.1
   lib64ncursesw6                  6.4-2ubuntu0.1
   lib64tinfo6                     6.4-2ubuntu0.1
   libncurses5                     6.4-2ubuntu0.1
   libncurses6                     6.4-2ubuntu0.1
   libncursesw5                    6.4-2ubuntu0.1
   libncursesw6                    6.4-2ubuntu0.1
   libtinfo5                       6.4-2ubuntu0.1
   libtinfo6                       6.4-2ubuntu0.1
   ncurses-bin                     6.4-2ubuntu0.1

Ubuntu 22.10:
   lib32ncurses6                   6.3+20220423-2ubuntu0.1
   lib32ncursesw6                  6.3+20220423-2ubuntu0.1
   lib32tinfo6                     6.3+20220423-2ubuntu0.1
   lib64ncurses6                   6.3+20220423-2ubuntu0.1
   lib64ncursesw6                  6.3+20220423-2ubuntu0.1
   lib64tinfo6                     6.3+20220423-2ubuntu0.1
   libncurses5                     6.3+20220423-2ubuntu0.1
   libncurses6                     6.3+20220423-2ubuntu0.1
   libncursesw5                    6.3+20220423-2ubuntu0.1
   libncursesw6                    6.3+20220423-2ubuntu0.1
   libtinfo5                       6.3+20220423-2ubuntu0.1
   libtinfo6                       6.3+20220423-2ubuntu0.1
   ncurses-bin                     6.3+20220423-2ubuntu0.1

Ubuntu 22.04 LTS:
   lib32ncurses6                   6.3-2ubuntu0.1
   lib32ncursesw6                  6.3-2ubuntu0.1
   lib32tinfo6                     6.3-2ubuntu0.1
   lib64ncurses6                   6.3-2ubuntu0.1
   lib64ncursesw6                  6.3-2ubuntu0.1
   lib64tinfo6                     6.3-2ubuntu0.1
   libncurses5                     6.3-2ubuntu0.1
   libncurses6                     6.3-2ubuntu0.1
   libncursesw5                    6.3-2ubuntu0.1
   libncursesw6                    6.3-2ubuntu0.1
   libtinfo5                       6.3-2ubuntu0.1
   libtinfo6                       6.3-2ubuntu0.1
   ncurses-bin                     6.3-2ubuntu0.1

Ubuntu 20.04 LTS:
   lib32ncurses6                   6.2-0ubuntu2.1
   lib32ncursesw6                  6.2-0ubuntu2.1
   lib32tinfo6                     6.2-0ubuntu2.1
   lib64ncurses6                   6.2-0ubuntu2.1
   lib64ncursesw6                  6.2-0ubuntu2.1
   lib64tinfo6                     6.2-0ubuntu2.1
   libncurses5                     6.2-0ubuntu2.1
   libncurses6                     6.2-0ubuntu2.1
   libncursesw5                    6.2-0ubuntu2.1
   libncursesw6                    6.2-0ubuntu2.1
   libtinfo5                       6.2-0ubuntu2.1
   libtinfo6                       6.2-0ubuntu2.1
   ncurses-bin                     6.2-0ubuntu2.1

Ubuntu 18.04 LTS:
   lib32ncurses5                   6.1-1ubuntu1.18.04.1
   lib32ncursesw5                  6.1-1ubuntu1.18.04.1
   lib32tinfo5                     6.1-1ubuntu1.18.04.1
   lib64ncurses5                   6.1-1ubuntu1.18.04.1
   lib64tinfo5                     6.1-1ubuntu1.18.04.1
   libncurses5                     6.1-1ubuntu1.18.04.1
   libncursesw5                    6.1-1ubuntu1.18.04.1
   libtinfo5                       6.1-1ubuntu1.18.04.1
   libx32ncurses5                  6.1-1ubuntu1.18.04.1
   libx32ncursesw5                 6.1-1ubuntu1.18.04.1
   libx32tinfo5                    6.1-1ubuntu1.18.04.1
   ncurses-bin                     6.1-1ubuntu1.18.04.1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   lib32ncurses5                   6.0+20160213-1ubuntu1+esm3
   lib32ncursesw5                  6.0+20160213-1ubuntu1+esm3
   lib32tinfo5                     6.0+20160213-1ubuntu1+esm3
   lib64ncurses5                   6.0+20160213-1ubuntu1+esm3
   lib64tinfo5                     6.0+20160213-1ubuntu1+esm3
   libncurses5                     6.0+20160213-1ubuntu1+esm3
   libncursesw5                    6.0+20160213-1ubuntu1+esm3
   libtinfo5                       6.0+20160213-1ubuntu1+esm3
   libx32ncurses5                  6.0+20160213-1ubuntu1+esm3
   libx32ncursesw5                 6.0+20160213-1ubuntu1+esm3
   libx32tinfo5                    6.0+20160213-1ubuntu1+esm3
   ncurses-bin                     6.0+20160213-1ubuntu1+esm3

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
   lib32ncurses5                   5.9+20140118-1ubuntu1+esm3
   lib32ncursesw5                  5.9+20140118-1ubuntu1+esm3
   lib32tinfo5                     5.9+20140118-1ubuntu1+esm3
   lib64ncurses5                   5.9+20140118-1ubuntu1+esm3
   lib64tinfo5                     5.9+20140118-1ubuntu1+esm3
   libncurses5                     5.9+20140118-1ubuntu1+esm3
   libncursesw5                    5.9+20140118-1ubuntu1+esm3
   libtinfo5                       5.9+20140118-1ubuntu1+esm3
   libx32ncurses5                  5.9+20140118-1ubuntu1+esm3
   libx32ncursesw5                 5.9+20140118-1ubuntu1+esm3
   libx32tinfo5                    5.9+20140118-1ubuntu1+esm3
   ncurses-bin                     5.9+20140118-1ubuntu1+esm3

In general, a standard system update will make all the necessary changes.

References

  https://ubuntu.com/security/notices/USN-6099-1

  CVE-2019-17594, CVE-2019-17595, CVE-2021-39537, CVE-2022-29458,

  CVE-2023-29491

May 23, 2023

Topics%20covered

Topics Covered

security advisory denial of service critical ncurses Ubuntu update instructions

Package Information

  https://launchpad.net/ubuntu/+source/ncurses/6.4-2ubuntu0.1
https://launchpad.net/ubuntu/+source/ncurses/6.3+20220423-2ubuntu0.1
  https://launchpad.net/ubuntu/+source/ncurses/6.3-2ubuntu0.1
  https://launchpad.net/ubuntu/+source/ncurses/6.2-0ubuntu2.1
https://launchpad.net/ubuntu/+source/ncurses/6.1-1ubuntu1.18.04.1

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