RedHat: RHSA-2018-1932:01 Moderate: zsh security update
Summary
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.
Security Fix(es):
* zsh: Stack-based buffer overflow in gen_matches_files() at compctl.c
(CVE-2018-1083)
* zsh: buffer overflow when scanning very long directory paths for symbolic
links (CVE-2014-10072)
* zsh: buffer overrun in symlinks (CVE-2017-18206)
* zsh: buffer overflow in utils.c:checkmailpath() can lead to local
arbitrary code execution (CVE-2018-1100)
For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.
The CVE-2018-1083 and CVE-2018-1100 issues were discovered by Richard
Maciel Costa (Red Hat).
Additional Changes:
For detailed information on changes in this release, see the Red Hat
Enterprise Linux 6.10 Release Notes and Red Hat Enterprise Linux 6.10
Technical Notes linked from the References section.
Summary
Solution
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
References
https://access.redhat.com/security/cve/CVE-2014-10072 https://access.redhat.com/security/cve/CVE-2017-18206 https://access.redhat.com/security/cve/CVE-2018-1083 https://access.redhat.com/security/cve/CVE-2018-1100 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-US/red_hat_enterprise_linux/6/html/6.10_release_notes/index.html https://access.redhat.com/documentation/en-US/red_hat_enterprise_linux/6/html/6.10_technical_notes/index.html
Package List
Red Hat Enterprise Linux Desktop (v. 6):
Source:
zsh-4.3.11-8.el6.src.rpm
i386:
zsh-4.3.11-8.el6.i686.rpm
zsh-debuginfo-4.3.11-8.el6.i686.rpm
x86_64:
zsh-4.3.11-8.el6.x86_64.rpm
zsh-debuginfo-4.3.11-8.el6.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
i386:
zsh-debuginfo-4.3.11-8.el6.i686.rpm
zsh-html-4.3.11-8.el6.i686.rpm
x86_64:
zsh-debuginfo-4.3.11-8.el6.x86_64.rpm
zsh-html-4.3.11-8.el6.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
zsh-4.3.11-8.el6.src.rpm
x86_64:
zsh-4.3.11-8.el6.x86_64.rpm
zsh-debuginfo-4.3.11-8.el6.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
x86_64:
zsh-debuginfo-4.3.11-8.el6.x86_64.rpm
zsh-html-4.3.11-8.el6.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
zsh-4.3.11-8.el6.src.rpm
i386:
zsh-4.3.11-8.el6.i686.rpm
zsh-debuginfo-4.3.11-8.el6.i686.rpm
ppc64:
zsh-4.3.11-8.el6.ppc64.rpm
zsh-debuginfo-4.3.11-8.el6.ppc64.rpm
s390x:
zsh-4.3.11-8.el6.s390x.rpm
zsh-debuginfo-4.3.11-8.el6.s390x.rpm
x86_64:
zsh-4.3.11-8.el6.x86_64.rpm
zsh-debuginfo-4.3.11-8.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
i386:
zsh-debuginfo-4.3.11-8.el6.i686.rpm
zsh-html-4.3.11-8.el6.i686.rpm
ppc64:
zsh-debuginfo-4.3.11-8.el6.ppc64.rpm
zsh-html-4.3.11-8.el6.ppc64.rpm
s390x:
zsh-debuginfo-4.3.11-8.el6.s390x.rpm
zsh-html-4.3.11-8.el6.s390x.rpm
x86_64:
zsh-debuginfo-4.3.11-8.el6.x86_64.rpm
zsh-html-4.3.11-8.el6.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
zsh-4.3.11-8.el6.src.rpm
i386:
zsh-4.3.11-8.el6.i686.rpm
zsh-debuginfo-4.3.11-8.el6.i686.rpm
x86_64:
zsh-4.3.11-8.el6.x86_64.rpm
zsh-debuginfo-4.3.11-8.el6.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
i386:
zsh-debuginfo-4.3.11-8.el6.i686.rpm
zsh-html-4.3.11-8.el6.i686.rpm
x86_64:
zsh-debuginfo-4.3.11-8.el6.x86_64.rpm
zsh-html-4.3.11-8.el6.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
An update for zsh is now available for Red Hat Enterprise Linux 6.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64
Bugs Fixed
1549836 - CVE-2014-10072 zsh: buffer overflow when scanning very long directory paths for symbolic links
1549861 - CVE-2017-18206 zsh: buffer overrun in symlinks
1557382 - CVE-2018-1083 zsh: Stack-based buffer overflow in gen_matches_files() at compctl.c
1563395 - CVE-2018-1100 zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution