CVE-2018-7548

In subst.c in zsh through 5.4.2, there is a NULL pointer dereference when using ${(PA)...} on an empty array result.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

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

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://sourceforge.net/p/zsh/code/ci/110b13e1090bc31ac1352b28adc2d02b6d25a102	Patch Third Party Advisory
https://usn.ubuntu.com/3593-1/	Third Party Advisory
https://security.gentoo.org/glsa/201805-10	Third Party Advisory

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Configurations

Configuration 1 (hide)

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

Configuration 2 (hide)

cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*

Information

Published : 2018-02-27 14:29

Updated : 2019-03-05 10:30

NVD link : CVE-2018-7548

Mitre link : CVE-2018-7548

JSON object : View

CWE

CWE-476

NULL Pointer Dereference

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Products Affected

canonical

ubuntu_linux

zsh

zsh

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