Ubuntu 12.04 LTS / 14.04 LTS / 15.04 / 15.10 : unzip regression (USN-2788-2)

medium Nessus Plugin ID 86809

Synopsis

The remote Ubuntu host is missing a security-related patch.

Description

USN-2788-1 fixed vulnerabilities in unzip. One of the security patches caused a regression when extracting 0-byte files. This update fixes the problem.

We apologize for the inconvenience.

Gustavo Grieco discovered that unzip incorrectly handled certain password protected archives. If a user or automated system were tricked into processing a specially crafted zip archive, an attacker could possibly execute arbitrary code. (CVE-2015-7696)

Gustavo Grieco discovered that unzip incorrectly handled certain malformed archives. If a user or automated system were tricked into processing a specially crafted zip archive, an attacker could possibly cause unzip to hang, resulting in a denial of service. (CVE-2015-7697).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected unzip package.

See Also

https://usn.ubuntu.com/2788-2/

Plugin Details

Severity: Medium

ID: 86809

File Name: ubuntu_USN-2788-2.nasl

Version: 2.9

Type: local

Agent: unix

Published: 11/10/2015

Updated: 1/19/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:unzip, cpe:/o:canonical:ubuntu_linux:12.04:-:lts, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:15.04, cpe:/o:canonical:ubuntu_linux:15.10

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/9/2015

Vulnerability Publication Date: 11/6/2015

Reference Information

CVE: CVE-2015-7696, CVE-2015-7697

USN: 2788-2