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Ubuntu: 4221-1 Critical: libpcap Denial Of Service Notification

ubuntu
Calendar Grey December 10, 2019
Dist Ubuntu Esm H88
=========================================================================Ubuntu Security Notice USN-
Applications using libpcap could be made to crash if given specially crafted data.

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:

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).

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu memory exhaustion libpcap

Update Instructions

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

Ubuntu 19.04:
  libpcap0.8                      1.8.1-6ubuntu1.19.04.1

Ubuntu 18.04 LTS:
  libpcap0.8                      1.8.1-6ubuntu1.18.04.1

Ubuntu 16.04 LTS:
  libpcap0.8                      1.7.4-2ubuntu0.1

Ubuntu 14.04 ESM:
  libpcap0.8                      1.5.3-2ubuntu0.1

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

References

https://ubuntu.com/security/notices/USN-4221-1

CVE-2019-15165

Severity
critical
Lowest
Low
Medium
High
Critical

December 11, 2019

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu memory exhaustion libpcap

Package Information

https://launchpad.net/ubuntu/+source/libpcap/1.8.1-6ubuntu1.19.04.1
https://launchpad.net/ubuntu/+source/libpcap/1.8.1-6ubuntu1.18.04.1
https://launchpad.net/ubuntu/+source/libpcap/1.7.4-2ubuntu0.1

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