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Ubuntu 17.04/16.04 LTS USN-3478-1 Critical: Perl DoS Risk

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Calendar Grey November 13, 2017
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Uncover essential news regarding Perl security flaws affecting various Ubuntu releases and learn strategies to safeguard your environment.
Perl could be made to crash if it received specially crafted input.

Summary

Perl could be made to crash if it received specially crafted

input.

Software Description:

- perl: Practical Extraction and Report Language

Details:

Jakub Wilk discovered that Perl incorrectly handled certain regular

expressions. An attacker could use this issue to cause Perl to crash,

resulting in a denial of service, or possibly execute arbitrary code.

(CVE-2017-12837, CVE-2017-12883)

Topics%20covered

Topics Covered

security advisory denial of service critical perl ubuntu

Update Instructions

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

Ubuntu 17.04:
  perl                            5.24.1-2ubuntu1.1

Ubuntu 16.04 LTS:
  perl                            5.22.1-9ubuntu0.2

Ubuntu 14.04 LTS:
  perl                            5.18.2-2ubuntu1.3

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

References

 

  CVE-2017-12837, CVE-2017-12883

Severity
critical
Lowest
Low
Medium
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Critical

November 13, 2017

Topics%20covered

Topics Covered

security advisory denial of service critical perl ubuntu

Package Information

  https://launchpad.net/ubuntu/+source/perl/5.24.1-2ubuntu1.1
  https://launchpad.net/ubuntu/+source/perl/5.22.1-9ubuntu0.2
  https://launchpad.net/ubuntu/+source/perl/5.18.2-2ubuntu1.3

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