CVE-2023-42448
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
7.8 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
19.4%
Hydra is the layer-two scalability solution for Cardano. Prior to version 0.13.0, the specification states that the contestation period in the datum of the UTxO at the head validator must stay unchanged as the state progresses from Open to Closed (Close transaction), but no such check appears to be performed in the checkClose function of the head validator. This would allow a malicious participant to modify the contestation deadline of the head to either allow them to fanout the head without giving another participant the chance to contest, or prevent any participant from ever redistributing the funds locked in the head via a fan-out. Version 0.13.0 contains a patch for this issue.
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| iohk:hydra | iohk hydra | lt | 0.13.0 |
CNA Affected
[
{
"vendor": "input-output-hk",
"product": "hydra",
"versions": [
{
"version": "< 0.13.0",
"status": "affected"
}
]
}
]References
github.com/input-output-hk/hydra/blob/master/CHANGELOG.md#0130---2023-10-03
github.com/input-output-hk/hydra/blob/master/hydra-plutus/src/Hydra/Contract/Head.hs#L284-L296
github.com/input-output-hk/hydra/blob/master/hydra-plutus/src/Hydra/Contract/Head.hs#L320-L323
github.com/input-output-hk/hydra/commit/2f45529729e28254a62f7a7c8d6649066923ed1f
github.com/input-output-hk/hydra/security/advisories/GHSA-mgcx-6p7h-5996
Related
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
7.8 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
19.4%