Operating System:

[Ubuntu]

Published:

16 January 2020

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.0162
                     USN-4221-2: libpcap vulnerability
                              16 January 2020

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

Product:           libpcap
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-15165  

Reference:         ESB-2019.4615
                   ESB-2019.3917
                   ESB-2019.3855

Original Bulletin: 
   https://usn.ubuntu.com/4221-2/

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USN-4221-2: libpcap vulnerability
15 January 2020

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

  o Ubuntu 12.04 ESM

Summary

Applications using libpcap could be made to crash if given specially crafted
data.

Software Description

  o libpcap - Library for for user-level network packet capture

Details

USN-4221-1 fixed a vulnerability in libpcap. This update provides the
corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

It was discovered that libpcap did not properly validate PHB headers in some
situations. An attacker could use this to cause a denial of service (memory
exhaustion).

Update instructions

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

Ubuntu 12.04 ESM
    libpcap0.8 - 1.1.1-10ubuntu0.1

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

  o USN-4221-1
  o CVE-2019-15165

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===========================================================================
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