------------------------------------------------------------------------- Debian LTS Advisory DLA-3682-1 debian-lts@lists.debian.org https://www.debian.org/lts/security/ Guilhem Moulin December 03, 2023 https://wiki.debian.org/LTS ------------------------------------------------------------------------- Package : ncurses Version : 6.1+20181013-2+deb10u5 CVE ID : CVE-2021-39537 CVE-2023-29491 Debian Bug : 1034372 Issues were found in ncurses, a collection of shared libraries for terminal handling, which could lead to denial of service. CVE-2021-39537 It has been discovered that the tic(1) utility is susceptible to a heap overflow on crafted input due to improper bounds checking. CVE-2023-29491 Jonathan Bar Or, Michael Pearse and Emanuele Cozzi have discovered that when ncurses is used by a setuid application, a local user can trigger security-relevant memory corruption via malformed data in a terminfo database file found in $HOME/.terminfo or reached via the TERMINFO or TERM environment variables. In order to mitigate this issue, ncurses now further restricts programs running with elevated privileges (setuid/setgid programs). Programs run by the superuser remain able to load custom terminfo entries. This change aligns ncurses' behavior in buster-security with that of Debian Bullseye's latest point release (6.2+20201114-2+deb11u2). For Debian 10 buster, these problems have been fixed in version 6.1+20181013-2+deb10u5. We recommend that you upgrade your ncurses packages. For the detailed security status of ncurses please refer to its security tracker page at: https://security-tracker.debian.org/tracker/ncurses Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS
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