USN-4814-1: Asterisk vulnerabilities

15 March 2021

Asterisk could be made to crash or run programs if it received specially crafted input.

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Releases

Packages

  • asterisk - Open Source Private Branch Exchange (PBX)

Details

Richard Mudgett discovered that Asterisk did not properly check the length
of input string when setting the user field for PartyB on a CDR. A remote
attacker could use this vulnerability to cause a denial of service (crash)
or potentially execute arbitrary code. (CVE-2017-16671)

Alex Villacis Lasso discovered that Asterisk did not properly check the
length of input string when setting the user field for PartyA on a CDR. A
remote attacker could use this vulnerability to cause a denial of service
(crash) or potentially execute arbitrary code. (CVE-2017-7617)

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

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

Ubuntu 16.04

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

References

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Further reading