GHSA-r9rv-9mh8-pxf4
Nervos CKB BlockTimeTooNew should not be considered as invalid block
- Severity
- Medium
- The publisher's own rating, not a CVSS score
- Exploit chance (EPSS)
- —
- No score published
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- —
- Not classified
- Fix
0.33.1- Upgrade ckb to this version or later
Description
Impact
Currently, when a node receives a block in future according to its local wall clock, it will mark the block as invalid and ban the peer.
If the header's timestamp is more than 15 seconds ahead of our current time. In that case, the header may become valid in the future, and we don't want to disconnect a peer merely for serving us one too-far-ahead block header, to prevent an attacker from splitting the network by mining a block right at the 15 seconds boundary.
Patches
Upgrade to v0.33.1 or above.
Workarounds
Don't ban peer serving too-far-ahead block header.
Affected versions
crates.io
| Package | Vulnerable | Fixed in |
|---|---|---|
| ckb | < 0.33.1 |
0.33.1 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
ckb crates.io → 0.33.1
- cargo
cargo update -p ckb --precise 0.33.1
References
Other links
Timeline
- Published
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-29c2-65rj-h343 Nervos CKB Permit load cell data from memory | Medium | Also affects ckb |
| GHSA-h4c3-5275-vrmg Nervos CKB Pool does not remove the conflicting transactions from the statistics | Medium | Also affects ckb |
| GHSA-q73f-w3h7-7wcc Nervos CKB Transaction which calls syscall load_cell_data_hash has nondeterministic result | Critical | Also affects ckb |
| GHSA-3gjh-29fv-8hr6 Nervos CKB Snappy decompress length can be very large and causes out of memory error | High | Also affects ckb |
| GHSA-wjxc-pjx9-4wvm Nervos CKB Panic on malformed input | High | Also affects ckb |
| GHSA-hjqq-29pw-96wj Nervos CKB node panics when processing a block which parent timestamp is too new | High | Also affects ckb |
| GHSA-pr39-8257-fxc2 Nervos CKB DoS: Process exists when p2p discovery protocol receives unsupported peer IP | Low | Also affects ckb |
| GHSA-84x2-2qv6-qg56 Nervos CKB P2P DoS Attacks | Critical | Also affects ckb |
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