USN-3555-1: w3m vulnerabilities

Ubuntu Security Notice USN-3555-1

1st February, 2018

w3m vulnerabilities

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

  • Ubuntu 17.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in w3m.

Software description

  • w3m - WWW browsable pager with excellent tables/frames support

Details

It was discovered that w3m incorrectly handled certain inputs.
An attacker could possibly use this to cause a denial of service.
(CVE-2018-6196, CVE-2018-6197)

It was discovered that w3m incorrectly handled temporary files.
An attacker could possibly use this to overwrite arbitrary files.
(CVE-2018-6198)

Update instructions

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

Ubuntu 17.10:
w3m 0.5.3-34ubuntu0.1
Ubuntu 16.04 LTS:
w3m 0.5.3-26ubuntu0.2
Ubuntu 14.04 LTS:
w3m 0.5.3-15ubuntu0.2

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-2018-6196, CVE-2018-6197, CVE-2018-6198