Full Report
Decentralized Autonomous Organizations (DAOs) are on-chain entities that can manage decisions and capital like companies do. The upside is that the formation of a DAO is much easier than a regular company. The article has many exploit types but I enjoyed the softer vulnerability on it personally versus the classic reentrancy and flash loan issues. So, that's what I'm going to post. Proposal execution is typically decentralized. Since this was the case after a Sonne Finance governance approval, the execution to add markets should have been fine. The order of operations really mattered. By doing things out of order, $20 was stolen from the market. To resolve this, ensure that multi-step proposals happen in the specific order TOGETHER. The next thing to consider are the proposals themselves. Since it's decentralized, anyone can make a proposal. Ensuring that these aren't approved for funky business is crucial for not getting completely pwned. Tornado Cash had a proposal for C503893 and one that claimed to be the same with a slight upgrade to it to destroy the old contract. In reality, the proposal deployed a different contract at the same location as the original proposal to add a backdoor to the system. Eventually, this led to $1M being stolen from the protocol then mixed through Tornado Cash itself (lolz). To prevent these issues from happening, a few things can be done: Analyse all submitted proposals. Given that not everyone has the technical capability to review code, this is challenging though. Proposal template should prevent use of the CREATE/CREATE codes to do some craziness in the replacing of the code. DAO's are good until they're not. In this case, similar to voting in the USA, not everyone is properly informed. So, having a forum with official communication on what something is can be a major positive influence on how the voting works. Insider Threats sound like science fiction but they are real. Threat actors like join companies in order to get the secrets and steal funds. Additionally, a rogue engineer can even steal the funds sometimes. To prevent these attacks from happening, carefully vet who you hire and ensure there are no single points of failure. Another problem is decentralization is doing stuff quickly or at all. In the case of Swerve Finance the team was completely anonymous. Additionally, they entrusted their multi-sig to big players like SBF. Eventually, when governance operations were needed, there was no one there to be found. Anon's can disappear in a moment. To resolve this, ensure people have reputations on the line and do not have ulterior motives. Timelocks are used to execute code after a specific time after the proposal; this gives users time to leave the system if something happens or perform an emergency stop if it's deemed to be malicious after approval. Compound, a defi loan system, had proposed a code change that had a serious bug in it that allowed COMP rewards to be claimed, which shouldn't be possible. Since there was a timelock on the governance actions, the code couldn't be fixed fast enough. The pro of DAOs is that you can be anonymous and methodical. At the same time, these can be cons. Developing the DAO in such a way that A) people are held responsible for their actions and B) swift action can be taken in times of need is essential. Good write-up discussing some of the edge cases of DAOs!
Analysis Summary
This summary focuses on the non-standard vulnerabilities detailed in the provided text concerning Decentralized Autonomous Organization (DAO) governance mechanisms, as requested, rather than classic smart contract exploits like reentrancy or flash loans.
# Vulnerability: Flawed Multi-Step Proposal Execution Order
## CVE Details
- CVE ID: N/A (Governance/Logic Flaw)
- CVSS Score: N/A
- CWE: CWE-843: Improper Access Control (Related to incorrect state management affecting assets)
## Affected Systems
- Products: Decentralized Autonomous Organizations (DAOs) utilizing multi-step governance proposals.
- Versions: Unspecified, dependent on implementation structure.
- Configurations: DAOs where complex, multi-step proposals are approved but executed out of the required transactional order.
## Vulnerability Description
When a DAO proposal requires multiple, sequential state changes (e.g., adding markets, updating conditions), executing these steps out of the mandated order can lead to critical state inconsistencies and fund loss. In the specific example provided (Sonne Finance approval), the order of operations was incorrect, leading to a direct theft of assets valued at \$20 due to the momentary flawed state.
## Exploitation
- Status: Exploited (Specific reported incident resulting in \$20 loss).
- Complexity: Low (If the vulnerability is structural/procedural and the actor knows the required steps).
- Attack Vector: Governance Proposal Execution.
## Impact
- Confidentiality: Not Applicable
- Integrity: Moderate (Loss of protocol funds/state corruption in the example).
- Availability: Low (Potential for system disruption depending on the failed operation).
## Remediation
### Patches
- Implement proposal execution logic to guarantee that all component steps of a multi-step proposal are executed **TOGETHER** and **in the specific, correct sequence**.
### Workarounds
- Until fixes are deployed, manually scrutinize complex proposals to ensure operational dependency is respected, or limit multi-step proposals.
## Detection
- **Detection Methods and Tools:** Auditing proposal execution logic to verify atomic execution or strict sequencing enforcement for interdependent calls.
## References
- Related to state management failure in Sonne Finance governance implementation.
***
# Vulnerability: Malicious Proposal Injection (Code Substitution)
## CVE Details
- CVE ID: N/A (Social Engineering / Proposal Integrity Flaw)
- CVSS Score: N/A
- CWE: CWE-749: Exposed Dangerous Method or Function (Related to uncontrolled contract deployment via governance)
## Affected Systems
- Products: DAOs where governance can approve proposals referencing contract code placement/upgrades.
- Versions: Unspecified.
- Configurations: DAOs susceptible to seemingly legitimate proposals masquerading as safe upgrades (like contract decommissioning/replacement).
## Vulnerability Description
A threat actor submitted a governance proposal that appeared to be a routine upgrade (e.g., replacing an old contract, as seen in the Tornado Cash scenario). However, the proposal surreptitiously deployed a *different, malicious contract* at the expected deployment address, specifically engineered to include a backdoor. Once ratified via governance, this malicious contract was installed, leading to a later theft of \$1 million, which was subsequently laundered.
## Exploitation
- Status: Exploited in the wild (Tornado Cash related incident, \$1M stolen).
- Complexity: High (Requires crafting a compelling, malicious proposal that mimics a legitimate one).
- Attack Vector: Governance / Social Engineering.
## Impact
- Confidentiality: High (If backdoors allow access to secrets).
- Integrity: High (Funds stolen, system trust undermined).
- Availability: Moderate.
## Remediation
### Patches
- **Code Review Mandate:** Rigorous, mandatory analysis of all submitted proposals, especially those involving contract creation or code modification addresses.
- **Template Restrictions:** Update proposal templates to restrict or entirely prevent the use of low-level contract creation opcodes (`CREATE`/`CREATE2`) within proposal calls where they are not strictly necessary for the intended, audited function.
- **Official Communication:** Establish and enforce a communication forum where official documentation explains the proposal's true intent, combating misinformation or confusion.
### Workarounds
- Relying heavily on audited baseline governance frameworks (e.g., Compound Governor) that limit execution scope.
## Detection
- **Detection Methods and Tools:** Static analysis tools that specifically check instruction sets within proposed executions for unauthorized deployment patterns.
## References
- Incident cited involving Tornado Cash governance proposals (C503893 context).
***
# Vulnerability: Uninformed/Rogue Insider Influence and Single Points of Failure
## CVE Details
- CVE ID: N/A (Operational Security / Human Factor)
- CVSS Score: N/A
- CWE: CWE-264: Permissions, Privileges, and Access Controls (Relates to excessive trust/authority)
## Affected Systems
- Products: Any DAO relying on a small set of multisig signers or anonymous operators.
- Versions: Unspecified.
- Configurations: Systems where personnel lack public reputation or where essential escape hatches rely on a few individuals.
## Vulnerability Description
This category covers two related failures:
1. **Insider Threats:** Employees or actors who gain inside access with the intent to steal funds or sabotage the DAO.
2. **Failure to Engage/Disappear:** Total reliance on anonymous actors (like the anonymous Swerve Finance team) or trusting high-profile, non-responsive signers (like SBF on a multisig). When key actions are needed, the responsible parties are unavailable, leading to governance paralysis or asset freezing.
## Exploitation
- Status: Continuous Threat (Insider threats are ongoing; Actor disappearance leads to operational failure).
- Complexity: Varies (Insider threat is Medium; Disappearance is Low difficulty for the threat actor).
- Attack Vector: Operational / Trust Model Failure.
## Impact
- Integrity: High (Theft or inability to act).
- Availability: High (If governance is halted because key operational roles are vacant or compromised).
## Remediation
### Patches
- **Vetting:** Implement stringent background checks and knowledge verification for individuals granted significant access or influence.
- **Decentralization of Critical Roles:** Eliminate single points of failure (SPOFs), especially regarding emergency functions (e.g., circuit-breakers).
- **Reputation Staking:** Structure roles such that participants have reputational capital on the line, deterring malicious activity.
### Workarounds
- No reliable technical workaround for human failure; focus must be on process and structure.
## Detection
- **Detection Methods and Tools:** Continuous monitoring of multisig activity and review of signatory mandates.
## References
- Mention of Digix DAO wind-down and reliance on high-profile multisig signers in other contexts.
***
# Vulnerability: Governance Timelock Delays Exceeding Bug Resolution Speed
## CVE Details
- CVE ID: N/A (System Design Flaw)
- CVSS Score: N/A
- CWE: CWE-16: A security property was not enforced – specifically, the inability to react quickly enough to deployed flaws.
## Affected Systems
- Products: DAOs using standard, long timelocks for proposal execution (e.g., Compound architecture).
- Versions: Any system using a timelock duration that is too long relative to the risk profile.
## Vulnerability Description
Timelocks are intended to allow users time to exit or for multisigs to veto (emergency stop) malicious code that passed a vote. If a proposal containing a critical bug (like the Compound rewards claim bug) passes, the timelock grants an execution window. If the bug causes immediate, rapid financial harm, or if the fix itself requires a governance vote, the established long timelock prevents rapid patching or mitigation before significant loss occurs.
## Exploitation
- Status: Identified post-approval, limiting remediation window (Compound example).
- Complexity: Medium (Requires a malicious proposal that passes, followed by the buggy code executing).
- Attack Vector: Governance Approval followed by Time-Delayed Execution.
## Impact
- Integrity: High (Loss of rewards/funds due to unfixable code in the waiting window).
- Availability: Moderate.
## Remediation
### Patches
- **Adaptive Timelocks:** Implement variable timelock strategies. Use short timelocks (e.g., 1 day) for low-risk operational changes and longer ones (e.g., 7 days) for high-risk code changes.
- **Instantaneous Emergency Mechanisms:** Design governance with specific, rapid response overrides (e.g., pause-only mechanisms) that can be triggered near-instantly, potentially by a separate, highly secured security council, to halt execution during an emergency.
### Workarounds
- For contracts utilizing Compound-like governance, a parallel governance takeover of the multisig or a coordinated community drain/exit may be the only option if the timelock is too long.
## Detection
- **Detection Methods and Tools:** Analyzing governance configurations to map timelock duration against the potential loss rate of assets controlled by the protocol.
## References
- Compound Finance governance proposal bug example.