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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.1469
                      USN-4338-2: re2c vulnerability
                               29 April 2020

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           re2c
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-11958  

Reference:         ESB-2020.1402

Original Bulletin: 
   https://usn.ubuntu.com/4338-2/

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USN-4338-2: re2c vulnerability
28 April 2020

re2c vulnerability
A security issue affects these releases of Ubuntu and its derivatives:

  o Ubuntu 20.04 LTS

Summary

re2c could be made to execute arbitrary code if it received a specially crafted
file.

Software Description

  o re2c - tool for generating fast C-based recognizers

Details

USN-4338-1 fixed vulnerabilities in re2c. This update provides the
corresponding update for Ubuntu 20.04 LTS.

Original advisory details:

Agostino Sarubbo discovered that re2c incorrectly handled certain files. An
attacker could possibly use this issue to execute arbitrary code.

Update instructions

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

Ubuntu 20.04 LTS
    re2c - 1.3-1ubuntu0.1

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

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

References

  o USN-4338-1
  o CVE-2020-11958

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