CVE-2018-1100

zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution

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Severity

Low

Red Hat Product Security

7.5

CVSS 3.0

Review impact separately from score.

Published · April 7, 2018

Updated · June 27, 2026

Description

A buffer overflow flaw was found in the zsh shell check path functionality. A local, unprivileged user can create a specially crafted message file, which, if used to set a custom "you have new mail" message, leads to code execution in the context of the user who receives the message. If the user affected is privileged, this leads to privilege escalation.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 7.5
CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')