[USN-5448-1] ncurses vulnerabilities


========================================================================== Ubuntu Security Notice USN-5448-1 May 26, 2022
ncurses vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 16.04 ESM – Ubuntu 14.04 ESM
Summary:
Several security issues were fixed in ncurses.
Software Description: – 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 ESM:   lib32ncurses5                   6.0+20160213-1ubuntu1+esm1   lib32ncursesw5                  6.0+20160213-1ubuntu1+esm1   lib32tinfo5                     6.0+20160213-1ubuntu1+esm1   lib64ncurses5                   6.0+20160213-1ubuntu1+esm1   lib64tinfo5                     6.0+20160213-1ubuntu1+esm1   libncurses5                     6.0+20160213-1ubuntu1+esm1   libncursesw5                    6.0+20160213-1ubuntu1+esm1   libtinfo5                       6.0+20160213-1ubuntu1+esm1   libx32ncurses5                  6.0+20160213-1ubuntu1+esm1   libx32ncursesw5                 6.0+20160213-1ubuntu1+esm1   libx32tinfo5                    6.0+20160213-1ubuntu1+esm1   ncurses-base                    6.0+20160213-1ubuntu1+esm1   ncurses-bin                     6.0+20160213-1ubuntu1+esm1   ncurses-term                    6.0+20160213-1ubuntu1+esm1
Ubuntu 14.04 ESM:   lib32ncurses5                   5.9+20140118-1ubuntu1+esm1   lib32ncursesw5                  5.9+20140118-1ubuntu1+esm1   lib32tinfo5                     5.9+20140118-1ubuntu1+esm1   lib64ncurses5                   5.9+20140118-1ubuntu1+esm1   lib64tinfo5                     5.9+20140118-1ubuntu1+esm1   libncurses5                     5.9+20140118-1ubuntu1+esm1   libncursesw5                    5.9+20140118-1ubuntu1+esm1   libtinfo5                       5.9+20140118-1ubuntu1+esm1   libx32ncurses5                  5.9+20140118-1ubuntu1+esm1   libx32ncursesw5                 5.9+20140118-1ubuntu1+esm1   libx32tinfo5                    5.9+20140118-1ubuntu1+esm1   ncurses-base                    5.9+20140118-1ubuntu1+esm1   ncurses-bin                     5.9+20140118-1ubuntu1+esm1   ncurses-term                    5.9+20140118-1ubuntu1+esm1
In general, a standard system update will make all the necessary changes.
References:   ubuntu.com/security/notices/USN-5448-1   CVE-2017-10684, CVE-2017-10685, CVE-2017-11112, CVE-2017-11113,   CVE-2017-13728, CVE-2017-13729, CVE-2017-13730, CVE-2017-13731,   CVE-2017-13732, CVE-2017-13733, CVE-2017-13734