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USN-4221-2: libpcap vulnerability

15 January 2020

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



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


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

In general, a standard system update will make all the necessary changes.


Related notices

  • USN-4221-1: libpcap-dev, libpcap0.8, libpcap0.8-dev, libpcap