CVE - CVE-2023-38701

CVE-ID
CVE-2023-38701	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Hydra is the layer-two scalability solution for Cardano. Users of the Hydra head protocol send the UTxOs they wish to commit into the Hydra head first to the `commit` validator, where they remain until they are either collected into the `head` validator or the protocol initialisation is aborted and the value in the committed UTxOs is returned to the users who committed them. Prior to version 0.12.0, the `commit` validator contains a flawed check when the `ViaAbort` redeemer is used, which allows any user to spend any UTxO which is at the validator arbitrarily, meaning an attacker can steal the funds that users are trying to commit into the head validator. The intended behavior is that the funds must be returned to the user which committed the funds and can only be performed by a participant of the head. The `initial` validator also is similarly affected as the same flawed check is performed for the `ViaAbort` redeemer. Due to this issue, an attacker can steal any funds that user's try to commit into a Hydra head. Also, an attacker can prevent any Hydra head from being successfully opened. It does not allow an attacker to take funds which have been successfully collected into and currently reside in the `head` validator. Version 0.12.0 contains a fix for this issue.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://github.com/input-output-hk/hydra/blob/master/CHANGELOG.md#0120---2023-08-18 URL:https://github.com/input-output-hk/hydra/blob/master/CHANGELOG.md#0120---2023-08-18 MISC:https://github.com/input-output-hk/hydra/blob/master/hydra-plutus/src/Hydra/Contract/Commit.hs#L94-L97 URL:https://github.com/input-output-hk/hydra/blob/master/hydra-plutus/src/Hydra/Contract/Commit.hs#L94-L97 MISC:https://github.com/input-output-hk/hydra/blob/master/hydra-plutus/src/Hydra/Contract/Util.hs#L32-L42 URL:https://github.com/input-output-hk/hydra/blob/master/hydra-plutus/src/Hydra/Contract/Util.hs#L32-L42 MISC:https://github.com/input-output-hk/hydra/security/advisories/GHSA-6x9v-7x5r-w8w6 URL:https://github.com/input-output-hk/hydra/security/advisories/GHSA-6x9v-7x5r-w8w6
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20230724	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20230724)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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