[USN-3464-2] Wget vulnerabilities

[Leonidas S. Barbosa]

==========================================================================
Ubuntu Security Notice USN-3464-2
October 30, 2017

wget vulnerabilities
==========================================================================

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

- Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in Wget.

Software Description:
- wget: retrieves files from the web

Details:

USN-3464-1 fixed several vulnerabilities in Wget. This update
provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 Antti Levomäki, Christian Jalio, and Joonas Pihlaja discovered that
 Wget incorrectly handled certain HTTP responses. A remote attacker
 could use this issue to cause Wget to crash, resulting in a denial of
 service, or possibly execute arbitrary code. 
 (CVE-2017-13089, CVE 2017-13090)

 Dawid Golunski discovered that Wget incorrectly handled recursive or
 mirroring mode. A remote attacker could possibly use this issue to
 bypass intended access list restrictions. (CVE-2016-7098)

 Orange Tsai discovered that Wget incorrectly handled CRLF sequences in
 HTTP headers. A remote attacker could possibly use this issue to
 inject arbitrary HTTP headers. (CVE-2017-6508)

Update instructions:

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

Ubuntu 12.04 ESM:
  wget                            1.13.4-2ubuntu1.5

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

References:
  https://www.ubuntu.com/usn/usn-3464-2
  https://www.ubuntu.com/usn/usn-3464-1
  CVE-2016-7098, CVE-2017-13089, CVE-2017-13090, CVE-2017-6508
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