CVE-2017-18205

In builtin.c in zsh before 5.4, when sh compatibility mode is used, there is a NULL pointer dereference during processing of the cd command with no argument if HOME is not set.

CVSS v3.0 8.1 HIGH
CVSS v2.0 6.8 MEDIUM

8.1^/10

CVSS v3.0 : HIGH

Vector : AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://sourceforge.net/p/zsh/code/ci/eb783754bdb74377f3cea4ceca9c23a02ea1bf58	Patch Third Party Advisory
https://usn.ubuntu.com/3593-1/
https://security.gentoo.org/glsa/201805-10
https://access.redhat.com/errata/RHSA-2018:3073

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Configurations

Configuration 1 (hide)

cpe:2.3:a:zsh_project:zsh:*:*:*:*:*:*:*:*

Information

Published : 2018-02-27 14:29

Updated : 2018-10-31 03:29

NVD link : CVE-2017-18205

Mitre link : CVE-2017-18205

JSON object : View

CWE

CWE-476

NULL Pointer Dereference

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Products Affected

zsh_project

zsh

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