Ubuntu Security Update USN-3555-1: w3m vulnerabilities

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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

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