Mandatory Patch Released – GUN Core V1.5.1
Team Guncoin announces the release of a mandatory security patch – GUN Core V1.5.1. This upgrade patch fixes the DoS vulnerability CVE-2018-17144 discovered in the Bitcoin 0.14 to 0.16 codebase that Guncoin follows.
This vulnerability was used to attack Guncoin causing a network fork between the checkpointed 1.5 (0.16) chain and the uncheckpointed 1.4 (0.13) chain. The 1.5 client did not crash but continued to operate and checkpoint blocks after the TX with already spent inputs.
The 1.5.1 release set a new checkpoint key to allow clients to switch over to the chain that does not have the duplicate spending of inputs. Users previously running the 1.5 based client will need to reindex on start using the -reindex start up option.