ESB-2018.0261 - [Ubuntu] gcab: Execute arbitrary code/commands - Remote with user interaction 2018-01-25

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             AUSCERT External Security Bulletin Redistribution

                     gcab vulnerability affects Ubuntu
                              25 January 2018


        AusCERT Security Bulletin Summary

Product:           gcab
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-5345  

Reference:         ESB-2018.0259

Original Bulletin:

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USN-3546-1: gcab vulnerability

Ubuntu Security Notice USN-3546-1

24th January, 2018

gcab vulnerability

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

Ubuntu 17.10

Ubuntu 16.04 LTS


gcab could be made to crash or run programs if it opened a specially crafted 

Software description

gcab - Microsoft Cabinet file manipulation tool


Richard Hughes discovered that gcab incorrectly handled certain malformed

cabinet files. If a user or automated system were tricked into opening a

specially crafted cabinet file, a remote attacker could use this issue to

cause gcab to crash, resulting in a denial of service, or possibly execute

arbitrary code.

Update instructions

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

Ubuntu 17.10:

libgcab-1.0-0 0.7-4ubuntu0.1

gcab 0.7-4ubuntu0.1

Ubuntu 16.04 LTS:

libgcab-1.0-0 0.7-1ubuntu0.1

gcab 0.7-1ubuntu0.1

To update your system, please follow these instructions:

After a standard system update you need to restart your session to make

all the necessary changes.



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