UBUNTU-CVE-2017-18205

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Source
https://ubuntu.com/security/CVE-2017-18205
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-18205.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2017-18205
Upstream
Downstream
Related
Published
2018-02-27T00:00:00Z
Modified
2025-09-08T16:44:34Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:14.04:LTS / zsh

Package

Name
zsh
Purl
pkg:deb/ubuntu/zsh@5.0.2-3ubuntu6.1?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.0.2-3ubuntu6.1

Affected versions

5.*

5.0.2-3ubuntu6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.0.2-3ubuntu6.1",
            "binary_name": "zsh"
        },
        {
            "binary_version": "5.0.2-3ubuntu6.1",
            "binary_name": "zsh-beta"
        },
        {
            "binary_version": "5.0.2-3ubuntu6.1",
            "binary_name": "zsh-common"
        },
        {
            "binary_version": "5.0.2-3ubuntu6.1",
            "binary_name": "zsh-dev"
        },
        {
            "binary_version": "5.0.2-3ubuntu6.1",
            "binary_name": "zsh-static"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:16.04:LTS / zsh

Package

Name
zsh
Purl
pkg:deb/ubuntu/zsh@5.1.1-1ubuntu2.1?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.1.1-1ubuntu2.1

Affected versions

5.*

5.1.1-1ubuntu1
5.1.1-1ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.1.1-1ubuntu2.1",
            "binary_name": "zsh"
        },
        {
            "binary_version": "5.1.1-1ubuntu2.1",
            "binary_name": "zsh-common"
        },
        {
            "binary_version": "5.1.1-1ubuntu2.1",
            "binary_name": "zsh-dev"
        },
        {
            "binary_version": "5.1.1-1ubuntu2.1",
            "binary_name": "zsh-static"
        }
    ],
    "availability": "No subscription required"
}