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Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Bind vulnerabilities (USN-4468-1)

medium Nessus Plugin ID 139770

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Synopsis

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

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4468-1 advisory.

 Emanuel Almeida discovered that Bind incorrectly handled certain TCP payloads. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-8620)

 Joseph Gullo discovered that Bind incorrectly handled QNAME minimization when used in certain configurations. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-8621)

 Dave Feldman, Jeff Warren, and Joel Cunningham discovered that Bind incorrectly handled certain truncated responses to a TSIG-signed request. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. (CVE-2020-8622)

 Lyu Chiy discovered that Bind incorrectly handled certain queries. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. (CVE-2020-8623)

 Joop Boonen discovered that Bind incorrectly handled certain subdomain update-policy rules. A remote attacker granted privileges to change certain parts of a zone could use this issue to change other contents of the zone, contrary to expectations. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-8624)

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-4468-1

Plugin Details

Severity: Medium

ID: 139770

File Name: ubuntu_USN-4468-1.nasl

Version: 1.10

Type: local

Agent: unix

Published: 8/24/2020

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: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2020-8624

CVSS v3

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.8

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libisccc-export140-udeb, p-cpe:/a:canonical:ubuntu_linux:libisccfg-export160-udeb, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:bind9-dnsutils, p-cpe:/a:canonical:ubuntu_linux:liblwres160, p-cpe:/a:canonical:ubuntu_linux:libisccfg160, p-cpe:/a:canonical:ubuntu_linux:libbind-export-dev, p-cpe:/a:canonical:ubuntu_linux:libbind9-140, p-cpe:/a:canonical:ubuntu_linux:libisccc-export140, p-cpe:/a:canonical:ubuntu_linux:libdns-export162-udeb, p-cpe:/a:canonical:ubuntu_linux:liblwres141, p-cpe:/a:canonical:ubuntu_linux:libisccfg-export140-udeb, p-cpe:/a:canonical:ubuntu_linux:libisccfg-export160, p-cpe:/a:canonical:ubuntu_linux:bind9-libs, p-cpe:/a:canonical:ubuntu_linux:libbind9-160, p-cpe:/a:canonical:ubuntu_linux:libisc-export160-udeb, p-cpe:/a:canonical:ubuntu_linux:bind9, p-cpe:/a:canonical:ubuntu_linux:libirs160, p-cpe:/a:canonical:ubuntu_linux:libisccc140, p-cpe:/a:canonical:ubuntu_linux:lwresd, p-cpe:/a:canonical:ubuntu_linux:libbind-dev, p-cpe:/a:canonical:ubuntu_linux:libisccfg140, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libirs-export160-udeb, p-cpe:/a:canonical:ubuntu_linux:libisccc-export160, p-cpe:/a:canonical:ubuntu_linux:libdns-export1100, p-cpe:/a:canonical:ubuntu_linux:libisc-export169-udeb, p-cpe:/a:canonical:ubuntu_linux:bind9-utils, p-cpe:/a:canonical:ubuntu_linux:libdns-export162, p-cpe:/a:canonical:ubuntu_linux:libisc169, p-cpe:/a:canonical:ubuntu_linux:libirs-export141-udeb, p-cpe:/a:canonical:ubuntu_linux:libdns1100, p-cpe:/a:canonical:ubuntu_linux:libisc-export160, p-cpe:/a:canonical:ubuntu_linux:host, p-cpe:/a:canonical:ubuntu_linux:dnsutils, p-cpe:/a:canonical:ubuntu_linux:libisc160, p-cpe:/a:canonical:ubuntu_linux:bind9utils, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libdns-export1100-udeb, p-cpe:/a:canonical:ubuntu_linux:libirs141, p-cpe:/a:canonical:ubuntu_linux:libisc-export169, p-cpe:/a:canonical:ubuntu_linux:libisccc160, p-cpe:/a:canonical:ubuntu_linux:libirs-export160, p-cpe:/a:canonical:ubuntu_linux:libisccc-export160-udeb, p-cpe:/a:canonical:ubuntu_linux:libisccfg-export140, p-cpe:/a:canonical:ubuntu_linux:bind9-host, p-cpe:/a:canonical:ubuntu_linux:libirs-export141, p-cpe:/a:canonical:ubuntu_linux:libdns162

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/21/2020

Vulnerability Publication Date: 8/21/2020

Reference Information

CVE: CVE-2020-8620, CVE-2020-8621, CVE-2020-8622, CVE-2020-8623, CVE-2020-8624

IAVA: 2020-A-0385-S

USN: 4468-1