GHSA-j35p-q24r-5367
Dep Group Remote Memory Exhaustion (Denial of Service) in ckb
- Severity
- High
- 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
0.43.1- Upgrade ckb to this version or later
Description
Impact
A remote attacker could exploit this vulnerability to exhaust ckb process memory of an affected node.
Patches
Upgrade to 0.43.1 or later.
References
After resolving the outpoints of one dep group, we put the corresponding content into a vec ( https://github.com/nervosnetwork/ckb/blob/v0.42.0/util/types/src/core/cell.rs#L600-L617 ), there is a vulnerability to a memory dos attack because there is no determination of whether the outpoints is duplicated.
PoC:
before send dos tx rss:
105700
after rss:
2306932
DoS cost: 25.6 KB * 150 + dep_tx out_points capacity ( 36 * 150 * 100 = 540000 ) = 4380000 CKB Send 50 dos_tx, memory exhausted: (25.6 KB * 150 * 100) * 50 = 19.2 GB
Affected versions
crates.io
| Package | Vulnerable | Fixed in |
|---|---|---|
| ckb | < 0.43.1 |
0.43.1 |
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 → 0.43.1
- cargo
cargo update -p ckb --precise 0.43.1
References
Packages
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-r9rv-9mh8-pxf4 Nervos CKB BlockTimeTooNew should not be considered as invalid block | Medium | Also affects ckb |
| GHSA-pr39-8257-fxc2 Nervos CKB DoS: Process exists when p2p discovery protocol receives unsupported peer IP | Low | Also affects ckb |
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