Security update for zsh

SUSE Security Update: Security update for zsh
Announcement ID: SUSE-SU-2018:1874-1
Rating: moderate
References: #1084656 #1087026 #1089030
Affected Products:
  • SUSE Linux Enterprise Module for Basesystem 15

  • An update that fixes three vulnerabilities is now available.

    Description:

    This update for zsh to version 5.5 fixes the following issues:

    Security issues fixed:

    - CVE-2018-1100: Fixes a buffer overflow in utils.c:checkmailpath() that
    can lead to local arbitrary code execution (bsc#1089030)
    - CVE-2018-1071: Fixed a stack-based buffer overflow in exec.c:hashcmd()
    (bsc#1084656)
    - CVE-2018-1083: Fixed a stack-based buffer overflow in
    gen_matches_files() at compctl.c (bsc#1087026)

    Non-security issues fixed:

    - The effect of the NO_INTERACTIVE_COMMENTS option extends into $(...) and
    `...` command substitutions when used on the command line.
    - The 'exec' and 'command' precommand modifiers, and options to them, are
    now parsed after parameter expansion.
    - Functions executed by ZLE widgets no longer have their standard input
    closed, but redirected from /dev/null instead.
    - There is an option WARN_NESTED_VAR, a companion to the existing
    WARN_CREATE_GLOBAL that causes a warning if a function updates a
    variable from an enclosing scope without using typeset -g.
    - zmodload now has an option -s to be silent on a failure to find a module
    but still print other errors.

    Patch Instructions:

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
    Alternatively you can run the command listed for your product:

    • SUSE Linux Enterprise Module for Basesystem 15:
      zypper in -t patch SUSE-SLE-Module-Basesystem-15-2018-1268=1

    Package List:

    • SUSE Linux Enterprise Module for Basesystem 15 (aarch64 ppc64le s390x x86_64):
      • zsh-5.5-3.3.15
      • zsh-debuginfo-5.5-3.3.15
      • zsh-debugsource-5.5-3.3.15

    References: