CVE-2018-1083

Severity: high (CVSS 7.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-03-28 · updated 2026-06-17
Weakness: CWE-120

Description

Zsh before version 5.4.2-test-1 is vulnerable to a buffer overflow in the shell autocomplete functionality. A local unprivileged user can create a specially crafted directory path which leads to code execution in the context of the user who tries to use autocomplete to traverse the before mentioned path. If the user affected is privileged, this leads to privilege escalation.

Affected products

Canonical Ubuntu Linux: 14.04, 16.04, 17.10
Debian Linux: 7.0
RedHat Enterprise Linux Desktop: 6.0, 7.0
RedHat Enterprise Linux Server: 6.0, 7.0
RedHat Enterprise Linux Workstation: 6.0, 7.0
zsh: through 5.4.1

References

http://www.securityfocus.com/bid/103572
https://access.redhat.com/errata/RHSA-2018:1932
https://access.redhat.com/errata/RHSA-2018:3073
https://bugzilla.redhat.com/show_bug.cgi?id=1557382
https://lists.debian.org/debian-lts-announce/2018/03/msg00038.html
https://lists.debian.org/debian-lts-announce/2020/12/msg00000.html
https://security.gentoo.org/glsa/201805-10
https://sourceforge.net/p/zsh/code/ci/259ac472eac291c8c103c7a0d8a4eaf3c2942ed7
https://usn.ubuntu.com/3608-1/
http://www.securityfocus.com/bid/103572
https://access.redhat.com/errata/RHSA-2018:1932
https://access.redhat.com/errata/RHSA-2018:3073

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