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Ubuntu 16.04 LTS : zlib vulnerabilities (USN-4246-1)

critical Nessus Plugin ID 133204

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Synopsis

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

Description

The remote Ubuntu 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4246-1 advisory.

 It was discovered that zlib incorrectly handled pointer arithmetic. An attacker could use this issue to cause zlib to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2016-9840, CVE-2016-9841)

 It was discovered that zlib incorrectly handled vectors involving left shifts of negative integers. An attacker could use this issue to cause zlib to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2016-9842)

 It was discovered that zlib incorrectly handled vectors involving big-endian CRC calculation. An attacker could use this issue to cause zlib to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2016-9843)

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-4246-1

Plugin Details

Severity: Critical

ID: 133204

File Name: ubuntu_USN-4246-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 1/23/2020

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: High

Score: 7.4

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-2016-9843

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: p-cpe:/a:canonical:ubuntu_linux:libx32z1-dev, p-cpe:/a:canonical:ubuntu_linux:zlib1g, p-cpe:/a:canonical:ubuntu_linux:zlib1g-dev, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:lib32z1, p-cpe:/a:canonical:ubuntu_linux:lib32z1-dev, p-cpe:/a:canonical:ubuntu_linux:lib64z1, p-cpe:/a:canonical:ubuntu_linux:libx32z1, p-cpe:/a:canonical:ubuntu_linux:lib64z1-dev, p-cpe:/a:canonical:ubuntu_linux:zlib1g-udeb

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/22/2020

Vulnerability Publication Date: 5/23/2017

Reference Information

CVE: CVE-2016-9840, CVE-2016-9841, CVE-2016-9842, CVE-2016-9843

USN: 4246-1