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Ubuntu Security Notice USN-4221-2

Ubuntu Security Notice USN-4221-2
Posted Jan 15, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4221-2 - USN-4221-1 fixed a vulnerability in libpcap. This update provides the corresponding update for Ubuntu 12.04 ESM. 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. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2019-15165
MD5 | 941776c10d29fddc0fefa1bd941788e2

Ubuntu Security Notice USN-4221-2

Change Mirror Download
=========================================================================
Ubuntu Security Notice USN-4221-2
January 15, 2020

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

- Ubuntu 12.04 ESM

Summary:

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

Software Description:
- 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

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

References:
https://usn.ubuntu.com/4221-2
https://usn.ubuntu.com/4221-1
CVE-2019-15165

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