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Fedora Update Notification
FEDORA-2018-ac1d9c2777
2018-05-05 22:24:26.609621
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Name : zsh
Product : Fedora 27
Version : 5.4.1
Release : 3.fc27
URL : http://zsh.sourceforge.net/
Summary : Powerful interactive shell
Description :
The zsh shell is a command interpreter usable as an interactive login
shell and as a shell script command processor. Zsh resembles the ksh
shell (the Korn shell), but includes many enhancements. Zsh supports
command line editing, built-in spelling correction, programmable
command completion, shell functions (with autoloading), a history
mechanism, and more.

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Update Information:

– fix stack-based buffer overflow in utils.c:checkmailpath() (CVE-2018-1100) –
fix stack-based buffer overflow in gen_matches_files() (CVE-2018-1083) – fix
stack-based buffer overflow in exec.c:hashcmd() (CVE-2018-1071)
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ChangeLog:

* Wed Apr 18 2018 Kamil Dudka <kdudka@redhat.com> – 5.4.1-3
– fix stack-based buffer overflow in utils.c:checkmailpath() (CVE-2018-1100)
– fix stack-based buffer overflow in gen_matches_files() (CVE-2018-1083)
– fix stack-based buffer overflow in exec.c:hashcmd() (CVE-2018-1071)
* Tue Mar 6 2018 Kamil Dudka <kdudka@redhat.com> – 5.4.1-2
– avoid crash when copying empty hash table (CVE-2018-7549)
– avoid NULL dereference when using ${(PA)…} on an empty array (CVE-2018-7548)
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References:

[ 1 ] Bug #1563396 – CVE-2018-1100 zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=1563396
[ 2 ] Bug #1560696 – CVE-2018-1083 zsh: Stack-based buffer overflow in gen_matches_files() at compctl.c [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=1560696
[ 3 ] Bug #1553533 – CVE-2018-1071 zsh: Stack-based buffer overflow in exec.c:hashcmd() [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=1553533
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This update can be installed with the “dnf” update program. Use
su -c ‘dnf upgrade –advisory FEDORA-2018-ac1d9c2777’ at the command
line. For more information, refer to the dnf documentation available at
http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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