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Ubuntu Security Notice USN-4672-1

Ubuntu Security Notice USN-4672-1
Posted Dec 17, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4672-1 - Rene Freingruber discovered that unzip incorrectly handled certain specially crafted password protected ZIP archives. If a user or automated system using unzip were tricked into opening a specially crafted zip file, an attacker could exploit this to cause a crash, resulting in a denial of service. Antonio Carista discovered that unzip incorrectly handled certain specially crafted ZIP archives. If a user or automated system using unzip were tricked into opening a specially crafted zip file, an attacker could exploit this to cause a crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2014-9913, CVE-2016-9844, CVE-2018-1000035, CVE-2018-18384, CVE-2019-13232
SHA-256 | a8a4d39eefa2e3b6acfd481a7ac1feef2ae8b8d70e10501df13be1e31d635e61

Ubuntu Security Notice USN-4672-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4672-1
December 16, 2020

unzip vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in unzip.

Software Description:
- unzip: De-archiver for .zip files

Details:

Rene Freingruber discovered that unzip incorrectly handled certain
specially crafted password protected ZIP archives. If a user or automated
system using unzip were tricked into opening a specially crafted zip file,
an attacker could exploit this to cause a crash, resulting in a denial of
service. (CVE-2018-1000035)

Antonio Carista discovered that unzip incorrectly handled certain
specially crafted ZIP archives. If a user or automated system using unzip
were tricked into opening a specially crafted zip file, an attacker could
exploit this to cause a crash, resulting in a denial of service. This
issue only affected Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.
(CVE-2018-18384)

It was discovered that unzip incorrectly handled certain specially crafted
ZIP archives. If a user or automated system using unzip were tricked into
opening a specially crafted zip file, an attacker could exploit this to
cause resource consumption, resulting in a denial of service.
(CVE-2019-13232)

Martin Carpenter discovered that unzip incorrectly handled certain
specially crafted ZIP archives. If a user or automated system using unzip
were tricked into opening a specially crafted zip file, an attacker could
exploit this to cause a crash, resulting in a denial of service. This
issue only affected Ubuntu 12.04 ESM, Ubuntu 14.04 ESM and Ubuntu 16.04
LTS. (CVE-2014-9913)

Alexis Vanden Eijnde discovered that unzip incorrectly handled certain
specially crafted ZIP archives. If a user or automated system using unzip
were tricked into opening a specially crafted zip file, an attacker could
exploit this to cause a crash, resulting in a denial of service. This
issue only affected Ubuntu 12.04 ESM, Ubuntu 14.04 ESM and Ubuntu 16.04
LTS. (CVE-2016-9844)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
unzip 6.0-21ubuntu1.1

Ubuntu 16.04 LTS:
unzip 6.0-20ubuntu1.1

Ubuntu 14.04 ESM:
unzip 6.0-9ubuntu1.6

Ubuntu 12.04 ESM:
unzip 6.0-4ubuntu2.6

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/4672-1
CVE-2014-9913, CVE-2016-9844, CVE-2018-1000035, CVE-2018-18384,
CVE-2019-13232

Package Information:
https://launchpad.net/ubuntu/+source/unzip/6.0-21ubuntu1.1
https://launchpad.net/ubuntu/+source/unzip/6.0-20ubuntu1.1

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