==========================================================================
Ubuntu Security Notice USN-4638-1
November 19, 2020
c-ares vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 20.10
Summary:
c-ares could be made to denial of service if it received a specially crafted
DNS request.
Software Description:
– c-ares: library for asynchronous name resolution
Details:
It was discovered that c-ares incorrectly handled certain DNS requests.
An attacker could possibly use this issue to cause a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.10:
libc-ares2 1.16.1-1ubuntu0.1
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4638-1
CVE-2020-8277
Package Information:
https://launchpad.net/ubuntu/+source/c-ares/1.16.1-1ubuntu0.1
—–BEGIN PGP SIGNATURE—–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=mAOd
—–END PGP SIGNATURE—–
—