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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2022.2596
                    USN-5448-1: ncurses vulnerabilities
                                27 May 2022

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           ncurses
Publisher:         Ubuntu
Operating System:  Ubuntu
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-13734 CVE-2017-13733 CVE-2017-13732
                   CVE-2017-13731 CVE-2017-13730 CVE-2017-13729
                   CVE-2017-13728 CVE-2017-11113 CVE-2017-11112
                   CVE-2017-10685 CVE-2017-10684 

Original Bulletin: 
   https://ubuntu.com/security/notices/USN-5448-1

Comment: CVSS (Max):  9.8 CVE-2017-10685 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
         CVSS Source: NVD
         Calculator:  https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

- --------------------------BEGIN INCLUDED TEXT--------------------

USN-5448-1: ncurses vulnerabilities
26 May 2022

Several security issues were fixed in ncurses.
Releases

  o Ubuntu 16.04 ESM
  o Ubuntu 14.04 ESM

Packages

  o ncurses - shared libraries for terminal handling (32-bit)

Details

It was discovered that ncurses was not properly checking array bounds
when executing the fmt_entry function, which could result in an
out-of-bounds write. An attacker could possibly use this issue to
execute arbitrary code. ( CVE-2017-10684 )

It was discovered that ncurses was not properly checking user input,
which could result in it being treated as a format argument. An
attacker could possibly use this issue to expose sensitive
information or to execute arbitrary code. ( CVE-2017-10685 )

It was discovered that ncurses was incorrectly performing memory
management operations and was not blocking access attempts to
illegal memory locations. An attacker could possibly use this issue
to cause a denial of service. ( CVE-2017-11112 , CVE-2017-13729 ,
CVE-2017-13730 , CVE-2017-13731 , CVE-2017-13732 , CVE-2017-13733 ,
CVE-2017-13734 )

It was discovered that ncurses was not properly performing checks
on pointer values before attempting to access the related memory
locations, which could lead to NULL pointer dereferencing. An
attacker could possibly use this issue to cause a denial of service.
( CVE-2017-11113 )

It was discovered that ncurses was incorrectly handling loops in
libtic, which could lead to the execution of an infinite loop. An
attacker could possibly use this issue to cause a denial of service.
( CVE-2017-13728 )

Update instructions

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

Ubuntu 16.04

  o libx32ncurses5 - 6.0+20160213-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o lib32ncursesw5 - 6.0+20160213-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o lib32tinfo5 - 6.0+20160213-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o libtinfo5 - 6.0+20160213-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o lib64tinfo5 - 6.0+20160213-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o lib32ncurses5 - 6.0+20160213-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o ncurses-bin - 6.0+20160213-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o lib64ncurses5 - 6.0+20160213-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o libncurses5 - 6.0+20160213-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o libncursesw5 - 6.0+20160213-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o ncurses-base - 6.0+20160213-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o libx32ncursesw5 - 6.0+20160213-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o libx32tinfo5 - 6.0+20160213-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o ncurses-term - 6.0+20160213-1ubuntu1+esm1
    Available with UA Infra or UA Desktop

Ubuntu 14.04

  o libx32ncurses5 - 5.9+20140118-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o lib32ncursesw5 - 5.9+20140118-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o lib32tinfo5 - 5.9+20140118-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o libtinfo5 - 5.9+20140118-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o lib64tinfo5 - 5.9+20140118-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o lib32ncurses5 - 5.9+20140118-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o ncurses-bin - 5.9+20140118-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o lib64ncurses5 - 5.9+20140118-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o libncurses5 - 5.9+20140118-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o libncursesw5 - 5.9+20140118-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o ncurses-base - 5.9+20140118-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o libx32ncursesw5 - 5.9+20140118-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o libx32tinfo5 - 5.9+20140118-1ubuntu1+esm1
    Available with UA Infra or UA Desktop
  o ncurses-term - 5.9+20140118-1ubuntu1+esm1
    Available with UA Infra or UA Desktop

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

References

  o CVE-2017-13729
  o CVE-2017-13731
  o CVE-2017-11113
  o CVE-2017-13732
  o CVE-2017-11112
  o CVE-2017-13733
  o CVE-2017-13730
  o CVE-2017-10685
  o CVE-2017-10684
  o CVE-2017-13734
  o CVE-2017-13728

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