ESB-2018.0327 - [UNIX/Linux][Ubuntu] w3m: Multiple vulnerabilities 2018-02-02

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0327
                            w3m vulnerabilities
                              2 February 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           w3m
Publisher:         Ubuntu
Operating System:  UNIX variants (UNIX, Linux, OSX)
                   Ubuntu
Impact/Access:     Create Arbitrary Files -- Remote with User Interaction
                   Denial of Service      -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-6198 CVE-2018-6197 CVE-2018-6196

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3555-2

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running w3m check for an updated version of the software for their 
         operating system.

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Ubuntu Security Notice USN-3555-2

1st February, 2018
w3m vulnerabilities

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

    Ubuntu 12.04 LTS

Summary

Several security issues were fixed in w3m.
Software description

    w3m - WWW browsable pager with excellent tables/frames support

Details

USN-3555-2 fixed vulnerabilities in w3m. This update
provides the corresponding update for Ubuntu 12.04 ESM.
Original advisory 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 12.04 LTS:
    w3m 0.5.3-5ubuntu1.3

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

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