CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
5.1%
Severity: High
Date : 2018-04-11
CVE-ID : CVE-2018-1100
Package : zsh
Type : arbitrary code execution
Remote : No
Link : https://security.archlinux.org/AVG-669
The package zsh before version 5.5-1 is vulnerable to arbitrary code
execution.
Upgrade to 5.5-1.
The problem has been fixed upstream in version 5.5.
None.
A stack-based buffer overflow has been found in zsh <= 5.4.2, in the
checkmailpath() function, where unchecked strings from the MAILCHECK
variable are copied to a buffer. 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.
A local attacker might be able to execute arbitrary code in the context
of another user.
https://www.zsh.org/mla/workers/2018/msg00411.html
https://sourceforge.net/p/zsh/code/ci/31f72205630687c1cef89347863aab355296a27f/
https://security.archlinux.org/CVE-2018-1100
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
5.1%