CVE-2024-34360 Previous ATX is not checked to be the newest valid ATX by Smesher when validating incoming ATX
Attackers can exploit incorrect ATX validation to unfairly earn rewards by holding PoST data for less than one epoch.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-34360?
CVE-2024-34360 is a high-severity vulnerability in spacemeshos go-spacemesh, published on 10 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
go-spacemesh is a Go implementation of the Spacemesh protocol full node. Nodes can publish activations transactions (ATXs) which reference the incorrect previous ATX of the Smesher that created the ATX. ATXs are expected to form a single chain from the newest to the first ATX ever published by an identity. Allowing Smeshers to reference an earlier (but not the latest) ATX as previous breaks this protocol rule and can serve as an attack vector where Nodes are rewarded for holding their PoST data for less than one epoch but still being eligible for rewards. This vulnerability is fixed in go-spacemesh 1.5.2-hotfix1 and Spacemesh API 1.37.1.
Weakness: CWE-754
Which versions are affected by CVE-2024-34360?
6 open source packages ship an affected version, including github.com/spacemeshos/go-spacemesh, github.com/spacemeshos/api and github.com/spacemeshos/api/release/go.
| Package | Affected | Fixed in |
|---|---|---|
github.com/spacemeshos/go-spacemesh Go | All versions | 1.5.2-hotfix1 |
github.com/spacemeshos/go-spacemesh Go | All versions | 1.5.2-hotfix1 |
github.com/spacemeshos/go-spacemesh Go | All versions | 1.5.2-hotfix1 |
github.com/spacemeshos/api Go | All versions | 1.37.1 |
github.com/spacemeshos/api Go | All versions | 1.37.1 |
github.com/spacemeshos/api/release/go Go | All versions | 1.37.1 |
How do I fix CVE-2024-34360?
Upgrade github.com/spacemeshos/go-spacemesh to 1.5.2-hotfix1 or later.
Is CVE-2024-34360 being exploited?
There is no known exploitation of CVE-2024-34360 in the wild and no public exploit code.
Sources
Also known as GHSA-jcqq-g64v-gcm7, GO-2024-2831.