CVE-2018-1100

Impact:
Low
Public Date:
2018-04-07
Bugzilla:
1563395: CVE-2018-1100 zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution
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.

Find out more about CVE-2018-1100 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v3 metrics

CVSS3 Base Score 7.5
CVSS3 Base Metrics CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction Required
Scope Changed
Confidentiality High
Integrity Impact High
Availability Impact High

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 6 (zsh) RHSA-2018:1932 2018-06-19
Red Hat Enterprise Linux 7 (zsh) RHSA-2018:3073 2018-10-30

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 8 zsh Not affected
Red Hat Enterprise Linux 5 zsh Will not fix

Acknowledgements

This issue was discovered by Richard Maciel Costa (Red Hat).
Last Modified