zsh through version 5.4.2 is vulnerable to a stack-based buffer overflow in the utils.c:checkmailpath function. A local attacker could exploit this to execute arbitrary code in the context of another user.
https://usn.ubuntu.com/3764-1/
https://security.gentoo.org/glsa/201805-10
https://bugzilla.redhat.com/show_bug.cgi?id=1563395
https://access.redhat.com/errata/RHSA-2018:3073
https://access.redhat.com/errata/RHSA-2018:1932
https://sourceforge.net/p/zsh/code/ci/31f72205630687c1cef89347863aab355296a27f/
https://lists.debian.org/debian-lts-announce/2020/12/msg00000.html
Source: Mitre, NVD
Published: 2018-04-11
Updated: 2024-11-21
Base Score: 7.2
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
Severity: High
Base Score: 7.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.00188