RHSA-2019:2017 — Security Advisory

Red Hat Security Advisory: zsh security and bug fix update

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Severity

Moderate

Red Hat Product Security

RHEL 7

Products

Official CSAF product identity

Published · August 6, 2019

Updated · June 25, 2026

Topic

An update for zsh is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

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.

Security Fix(es):

  • zsh: Improper handling of shebang line longer than 64 (CVE-2018-13259)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.

Related CVEs

RHSA-2019:2017 — Red Hat Security Advisory: zsh security and bug fix update | PulseLinux