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Ubuntu 14.04 LTS / 16.04 LTS : Zsh vulnerabilities (USN-3593-1)

critical Nessus Plugin ID 107257

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3593-1 advisory.

 It was discovered that Zsh incorrectly handled certain enviroment variables. An attacker could possibly use this issue to gain privileged access to the system. This issue only affected Ubuntu 14.04 LTS.
 (CVE-2014-10070)

 It was discovered that Zsh incorrectly handled certain inputs. An attacker could possibly use this to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2014-10071)

 It was discovered that Zsh incorrectly handled some symbolic links. An attacker could possibly use this to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2014-10072)

 It was discovered that Zsh incorrectly handled certain errors. An attacker could possibly use this issue to cause a denial of service. (CVE-2016-10714)

 It was discovered that Zsh incorrectly handled certain commands. An attacker could possibly use this to execute arbitrary code. (CVE-2017-18205)

 It was discovered that Zsh incorrectly handled certain symlinks. An attacker could possibly use this to execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-18206)

 It was discovered that Zsh incorrectly handled certain inputs. An attacker could possible use to execute arbitrary code. This issue only affected Ubuntu 17.10. (CVE-2018-7548)

 It was discovered that Zsh incorrectly handled certain inputs. An attacker could possibly use this to cause a denial of service. (CVE-2018-7549)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-3593-1

Plugin Details

Severity: Critical

ID: 107257

File Name: ubuntu_USN-3593-1.nasl

Version: 1.8

Type: local

Agent: unix

Published: 3/9/2018

Updated: 8/27/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2018-7548

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:zsh-dev, p-cpe:/a:canonical:ubuntu_linux:zsh, p-cpe:/a:canonical:ubuntu_linux:zsh-common, p-cpe:/a:canonical:ubuntu_linux:zsh-beta, p-cpe:/a:canonical:ubuntu_linux:zsh-static

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 3/8/2018

Vulnerability Publication Date: 2/27/2018

Reference Information

CVE: CVE-2014-10070, CVE-2014-10071, CVE-2014-10072, CVE-2016-10714, CVE-2017-18205, CVE-2017-18206, CVE-2018-7548, CVE-2018-7549

USN: 3593-1