GHSA-45p7-c959-rgcm CVE-2021-45700 GHSA-cw98-cx2m-9qqg RUSTSEC-2021-0109
Process crashes when the cell used as DepGroup is not alive
High
crates.io
- Severity
- 7.5 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- 1.12%
- Chance of exploitation in the next 30 days. Higher than 66.27% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-400 Uncontrolled Resource Consumption
- Fix
0.40.0- Upgrade ckb to this version or later
Description
Impact
It's easy to create a malign transaction which uses the dead cell as the DepGroup in the DepCells. The transaction can crash all the receiving nodes.
Affected versions
crates.io
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 → 0.40.0
- cargo
cargo update -p ckb --precise 0.40.0
Severity breakdown
CVSS 3.1 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Weakness
CWE-400: Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource.
How to prevent it
- Architecture and Design: Design throttling mechanisms into the system architecture. The best protection is to limit the amount of resources that an unauthorized user can cause to be expended. A strong authentication and access control model will help prevent such attacks from occurring in the first place. The login application should be protected against DoS attacks as much as possible. Limiting the database access, perhaps by caching result sets, can help minimize the resources expended. To further limit the potential for a DoS attack, consider tracking the rate of requests received from users and blocking requests that exceed a defined rate threshold.
- Architecture and Design: Mitigation of resource exhaustion attacks requires that the target system either: recognizes the attack and denies that user further access for a given amount of time, or uniformly throttles all requests in order to make it more difficult to consume resources more quickly than they can again be freed. The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question. The second solution is simply difficult to effectively institute -- and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.
- Architecture and Design: Ensure that protocols have specific limits of scale placed on them.
- Implementation: Ensure that all failures in resource allocation place the system into a safe posture.
References
Advisories
Packages
Other links
Timeline
- Published
- Last updated by the source
- Latest EPSS score
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 |
MergeHarbor checks every repository's dependencies against this database, ranks what matters by exploitability and reachability, routes it to the owning team and opens the fix pull request.
Check your repos with MergeHarbor