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

Ubuntu Security Notice (C) 2015-2016 Canonical, Inc. / NASL script (C) 2015-2016 Tenable Network Security, Inc.


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.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 6.1
(CVSS2#E:POC/RL:U/RC:ND)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 86809 ()

Bugtraq ID:

CVE ID: CVE-2015-7696
CVE-2015-7697

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