[FROG] New Releases of FRR

Donald Sharp sharpd at cumulusnetworks.com
Wed Jan 9 20:34:33 EST 2019

All -

On Monday a research group installed into the global BGP routing table
a prefix with a attribute type of 0xFF, which is designated as
experimental by BGP RFC's.  FRR had a developmental escape that read
this attribute incorrectly and caused the bgp peering session to flap.
If you have compiled FRR with the `--enable-bgp-vnc` option and run
BGP as a peer on the global routing table you are vulnerable to this
issue.  This issue has been fixed in FRR with this commit:


We have applied this fix to the stable/3.0(3.0.4), stable/4.0(4.0.1),
stable/5.0(5.0.2) and stable/6.0(6.0.2) branches.  New releases can be
found here:


Snap packaging and the FreeBSD ports have been updated as well.  We
recommend you update your installation of FRR immediately.

At this point we are applying for a CVE and will announce that
information when we have it.

In the near future we plan to implement RFC-7606 to handle this
situation better in BGP, if you have any questions please feel free to
email me, or to open up discussions on the frog alias.



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