Fedora 31: FEDORA-2020-01dc2bc62c critical: fastd DoS Memory Leak

fastd is a secure tunneling daemon with some unique features:

- Very small binary (about 100KB on OpenWRT in the default configuration,

including all dependencies besides libc)

- Exchangable crypto methods

- Transport over UDP for simple usage behind NAT

- Can run in 1:1 and 1:n scenarios

- There are no server and client roles defined by the protocol, this is just

defined by the usage.

- Only one instance of the daemon is needed on each host to create a full mesh

If no full mesh is established, a routing protocol is necessary to enable

hosts that are not connected directly to reach each other

Fix for CVE-2020-27638

* Fri Oct 23 2020 Felix Kaechele - 21-1

- update to 21

- fixes CVE-2020-27638

[ 1 ] Bug #1887118 - fastd-21 is available

https://bugzilla.redhat.com/show_bug.cgi?id=1887118

[ 2 ] Bug #1890968 - CVE-2020-27638 fastd: DoS'able memory leak on invalid packets [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=1890968

[ 3 ] Bug #1890969 - CVE-2020-27638 fastd: DoS'able memory leak on invalid packets [epel-7]

https://bugzilla.redhat.com/show_bug.cgi?id=1890969

[ 4 ] Bug #1890970 - CVE-2020-27638 fastd: DoS'able memory leak on invalid packets [epel-8]

https://bugzilla.redhat.com/show_bug.cgi?id=1890970

su -c 'dnf upgrade --advisory FEDORA-2020-01dc2bc62c' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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