USN-3464-1: Wget vulnerabilities

Ubuntu Security Notice USN-3464-1

26th October, 2017

wget vulnerabilities

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

  • Ubuntu 17.10
  • Ubuntu 17.04
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in Wget.

Software description

  • wget - retrieves files from the web

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 version:

Ubuntu 17.10:
wget 1.19.1-3ubuntu1.1
Ubuntu 17.04:
wget 1.18-2ubuntu1.1
Ubuntu 16.04 LTS:
wget 1.17.1-1ubuntu1.3
Ubuntu 14.04 LTS:
wget 1.15-1ubuntu1.14.04.3

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2016-7098, CVE-2017-13089, CVE-2017-13090, CVE-2017-6508