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Alerts This Week
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Ubuntu 12.04 ESM: USN-3434-2 Critical: Libidn Denial of Service

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Calendar Grey October 23, 2017
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Address Libidn security flaw in Ubuntu 12.04 ESM to mitigate potential crash threats and strengthen system integrity.
Libidn could be made to crash or run programs if it processed specially crafted input.

Summary

Libidn could be made to crash or run programs if it processed specially

crafted input.

Software Description:

- libidn: implementation of IETF IDN specifications

Details:

USN-3434-1 fixed a vulnerability in  Libidn. This update

provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 It was discovered that Libidn incorrectly handled decoding certain

 digits. A remote attacker could use this issue to cause Libidn to

 crash, resulting in a denial of service, or possibly execute arbitrary

 code.

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu libidn

Update Instructions

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

Ubuntu 12.04 ESM:
  libidn11                        1.23-2ubuntu0.2

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

References

  https://ubuntu.com/security/notices/USN-3434-2

  https://ubuntu.com/security/notices/USN-3434-1

  CVE-2017-14062

Severity
critical
Lowest
Low
Medium
High
Critical

October 23, 2017

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu libidn

Package Information

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