[USN-3759-2] libtirpc vulnerabilities

[Leonidas S. Barbosa]

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Ubuntu Security Notice USN-3759-2
September 05, 2018

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

- Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in libtirpc.

Software Description:
- libtirpc: transport-independent RPC library - development files

Details:

USN-3759-1 fixed a vulnerability in libtirpc. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 Aldy Hernandez discovered that libtirpc incorrectly handled certain
 inputs. An attacker could possibly use this issue to cause a denial of
 service. (CVE-2016-4429)

 It was discovered that libtirpc incorrectly handled certain inputs.
 An attacker could possibly use this issue to cause a denial of
 service. (CVE-2018-14622)

 It was discovered that libtirpc incorrectly handled certain strings.
 An attacker could possibly use this issue to cause a denial of
 service. (CVE-2017-8779)

Update instructions:

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

Ubuntu 12.04 ESM:
  libtirpc-dev                    0.2.2-5ubuntu0.1
  libtirpc1                       0.2.2-5ubuntu0.1

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
  https://usn.ubuntu.com/usn/usn-3759-2
  https://usn.ubuntu.com/usn/usn-3759-1
  CVE-2016-4429, CVE-2017-8779, CVE-2018-14622
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