DeFi Saver Exchange Vulnerability - Revision history

Azoundria at 19:33, 1 May 2023

2023-05-01T19:33:56Z

← Older revision		Revision as of 13:33, 1 May 2023
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	{{Imported Case Study\|source=https://www.quadrigainitiative.com/casestudy/defisaverexchangevulnerability.php}}		{{Imported Case Study 2\|source=https://www.quadrigainitiative.com/casestudy/defisaverexchangevulnerability.php}}
	{{Unattributed ~~Citations~~}}		{{Unattributed Sources}}

	[[File:Defisaver.jpg\|thumb\|DeFi Saver]]There was a vulnerability in the DefiSaver smart contract. Some funds were under risk, however they were captured and returned through a whitehat hack.		[[File:Defisaver.jpg\|thumb\|DeFi Saver]]There was a vulnerability in the DefiSaver smart contract. Some funds were under risk, however they were captured and returned through a whitehat hack.

	This is a global/international case not involving a specific country.		This is a global/international case not involving a specific country.<ref name="defisaverwebsite-1807" /><ref name="imtokenofficialtwitter-1808" /><ref name="slowmistmedium-1809" /><ref name="defisavertwitter-1810" /><ref name="defisavertwitter-1811" /><ref name="defisavermedium-1812" /><ref name="defisavertwitter-1813" /><ref name="etherscan-1814" /><ref name="etherscan-1815" /><ref name="mastermedium-3719" /><ref name="blocksecteammedium-3714" /><ref name="secos-3720" />
	<ref name="defisaverwebsite-1807" /><ref name="imtokenofficialtwitter-1808" /><ref name="slowmistmedium-1809" /><ref name="defisavertwitter-1810" /><ref name="defisavertwitter-1811" /><ref name="defisavermedium-1812" /><ref name="defisavertwitter-1813" /><ref name="etherscan-1814" /><ref name="etherscan-1815" /><ref name="mastermedium-3719" /><ref name="blocksecteammedium-3714" /><ref name="secos-3720" />

	== About DeFi Saver ==		== About DeFi Saver ==
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	!Description		!Description
	\|-		\|-
	\|June 19th, 2020 ~~12:00:00 AM~~		\|June 19th, 2020
	\|Main Event		\|Main Event
	\|Expand this into a brief description of what happened and the impact. If multiple lines are necessary, add them here.		\|Expand this into a brief description of what happened and the impact. If multiple lines are necessary, add them here.
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	\|		\|
	\|}		\|}

			== Technical Details ==
			This section includes specific detailed technical analysis of any security breaches which happened. What specific software vulnerabilities contributed to the problem and how were they exploited?

	== Total Amount Lost ==		== Total Amount Lost ==
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	== Ongoing Developments ==		== Ongoing Developments ==
	What parts of this case are still remaining to be concluded?		What parts of this case are still remaining to be concluded?
			== General Prevention Policies ==
			No user funds were lost.
			== Individual Prevention Policies ==
			{{Prevention:Individuals:Placeholder}}

			{{Prevention:Individuals:End}}

			== Platform Prevention Policies ==
			{{Prevention:Platforms:Placeholder}}

			{{Prevention:Platforms:End}}

			== Regulatory Prevention Policies ==
			{{Prevention:Regulators:Placeholder}}

	== Prevention ~~Policies ==~~		{{Prevention:Regulators:End}}
	~~No user funds were lost.~~

	== References ==		== References ==
	<references><ref name="defisaverwebsite-1807">[https://defisaver.com/ DeFi Saver] (Jul 24, 2021)</ref>		<references><ref name="defisaverwebsite-1807">[https://defisaver.com/ DeFi Saver] (Jul 25, 2021)</ref>

	<ref name="imtokenofficialtwitter-1808">[https://twitter.com/imTokenOfficial/status/1314126579971186688 @imTokenOfficial Twitter] (Jul 24, 2021)</ref>		<ref name="imtokenofficialtwitter-1808">[https://twitter.com/imTokenOfficial/status/1314126579971186688 @imTokenOfficial Twitter] (Jul 25, 2021)</ref>

	<ref name="slowmistmedium-1809">[https://slowmist.medium.com/slowmist-how-was-the-310-000-dai-of-defi-saver-users-stolen-91de37a4ade2 Slowmist How Was The 310 000 Dai Of Defi Saver Users Stolen] (Jul 24, 2021)</ref>		<ref name="slowmistmedium-1809">[https://slowmist.medium.com/slowmist-how-was-the-310-000-dai-of-defi-saver-users-stolen-91de37a4ade2 Slowmist How Was The 310 000 Dai Of Defi Saver Users Stolen] (Jul 25, 2021)</ref>

	<ref name="defisavertwitter-1810">[https://twitter.com/DeFiSaver/status/1274093629800361984 @DeFiSaver Twitter] (Jul 24, 2021)</ref>		<ref name="defisavertwitter-1810">[https://twitter.com/DeFiSaver/status/1274093629800361984 @DeFiSaver Twitter] (Jul 25, 2021)</ref>

	<ref name="defisavertwitter-1811">[https://twitter.com/DeFiSaver/status/1274787645093285890 @DeFiSaver Twitter] (Jul 24, 2021)</ref>		<ref name="defisavertwitter-1811">[https://twitter.com/DeFiSaver/status/1274787645093285890 @DeFiSaver Twitter] (Jul 25, 2021)</ref>

	<ref name="defisavermedium-1812">[https://medium.com/defi-saver/disclosing-a-recently-discovered-exchange-vulnerability-fcd0b61edffe Disclosing A Recently Discovered Exchange Vulnerability] (Jul 24, 2021)</ref>		<ref name="defisavermedium-1812">[https://medium.com/defi-saver/disclosing-a-recently-discovered-exchange-vulnerability-fcd0b61edffe Disclosing A Recently Discovered Exchange Vulnerability] (Jul 25, 2021)</ref>

	<ref name="defisavertwitter-1813">[https://twitter.com/DeFiSaver/status/1277973869710594053 @DeFiSaver Twitter] (Jul 24, 2021)</ref>		<ref name="defisavertwitter-1813">[https://twitter.com/DeFiSaver/status/1277973869710594053 @DeFiSaver Twitter] (Jul 25, 2021)</ref>

	<ref name="etherscan-1814">[https://etherscan.io/address/0x9523fe0d1d488cafddfb3dce28d7d177dddbc300 ExchangeRedeemer \| 0x9523fe0d1d488cafddfb3dce28d7d177dddbc300] (Jul 24, 2021)</ref>		<ref name="etherscan-1814">[https://etherscan.io/address/0x9523fe0d1d488cafddfb3dce28d7d177dddbc300 ExchangeRedeemer \| 0x9523fe0d1d488cafddfb3dce28d7d177dddbc300] (Jul 25, 2021)</ref>

	<ref name="etherscan-1815">[https://etherscan.io/address/0xe05b162cd6571e825484ae95a93bfac02e64b05a DeFi Saver: Safeguard \| 0xe05b162cd6571e825484ae95a93bfac02e64b05a] (Jul 24, 2021)</ref>		<ref name="etherscan-1815">[https://etherscan.io/address/0xe05b162cd6571e825484ae95a93bfac02e64b05a DeFi Saver: Safeguard \| 0xe05b162cd6571e825484ae95a93bfac02e64b05a] (Jul 25, 2021)</ref>

	<ref name="mastermedium-3719">[https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/medium.com/defi-saver/disclosing-a-recently-discovered-vulnerability-d88e3b5cb67 https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/medium.com/defi-saver/disclosing-a-recently-discovered-vulnerability-d88e3b5cb67] (Oct 11, 2021)</ref>		<ref name="mastermedium-3719">[https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/medium.com/defi-saver/disclosing-a-recently-discovered-vulnerability-d88e3b5cb67 https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/medium.com/defi-saver/disclosing-a-recently-discovered-vulnerability-d88e3b5cb67] (Oct 12, 2021)</ref>

	<ref name="blocksecteammedium-3714">[https://blocksecteam.medium.com/unlimited-approval-in-erc20-convenience-or-security-1c8dce421ed7 Unlimited Approval In Erc20 Convenience Or Security] (Oct 11, 2021)</ref>		<ref name="blocksecteammedium-3714">[https://blocksecteam.medium.com/unlimited-approval-in-erc20-convenience-or-security-1c8dce421ed7 Unlimited Approval In Erc20 Convenience Or Security] (Oct 12, 2021)</ref>

	<ref name="secos-3720">[https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/www.chainnews.com/articles/790968196239.htm https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/www.chainnews.com/articles/790968196239.htm] (Oct 11, 2021)</ref></references>		<ref name="secos-3720">[https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/www.chainnews.com/articles/790968196239.htm https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/www.chainnews.com/articles/790968196239.htm] (Oct 12, 2021)</ref></references>

Azoundria at 17:17, 17 February 2023

2023-02-17T17:17:54Z

← Older revision		Revision as of 11:17, 17 February 2023
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	{{Imported Case Study\|source=https://www.quadrigainitiative.com/casestudy/defisaverexchangevulnerability.php}}		{{Imported Case Study\|source=https://www.quadrigainitiative.com/casestudy/defisaverexchangevulnerability.php}}
			{{Unattributed Citations}}

	[[File:Defisaver.jpg\|thumb\|DeFi Saver]]There was a vulnerability in the DefiSaver smart contract. Some funds were under risk, however they were captured and returned through a whitehat hack.		[[File:Defisaver.jpg\|thumb\|DeFi Saver]]There was a vulnerability in the DefiSaver smart contract. Some funds were under risk, however they were captured and returned through a whitehat hack.

	This is a global/international case not involving a specific country.		This is a global/international case not involving a specific country.
			<ref name="defisaverwebsite-1807" /><ref name="imtokenofficialtwitter-1808" /><ref name="slowmistmedium-1809" /><ref name="defisavertwitter-1810" /><ref name="defisavertwitter-1811" /><ref name="defisavermedium-1812" /><ref name="defisavertwitter-1813" /><ref name="etherscan-1814" /><ref name="etherscan-1815" /><ref name="mastermedium-3719" /><ref name="blocksecteammedium-3714" /><ref name="secos-3720" />

	== About DeFi Saver ==		== About DeFi Saver ==
Line 31:		Line 33:

	Don't Include:		Don't Include:

	* Any wording which directly states or implies that the business is/was illegitimate, or that a vulnerability existed.		* Any wording which directly states or implies that the business is/was illegitimate, or that a vulnerability existed.
	* Anything that wasn't reasonably knowable at the time of the event.		* Anything that wasn't reasonably knowable at the time of the event.
Line 53:		Line 54:
	\|-		\|-
	\|June 19th, 2020 12:00:00 AM		\|June 19th, 2020 12:00:00 AM
	\|~~First~~ Event		\|Main Event
	\|~~This is an expanded~~ description of what happened and the impact. If multiple lines are necessary, add them here.		\|Expand this into a brief description of what happened and the impact. If multiple lines are necessary, add them here.
	\|-
	\|
	\|
	\|
	\|-		\|-
	\|		\|
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	== Total Amount Lost ==		== Total Amount Lost ==
	The total amount lost ~~is unknown~~.		The total amount lost has been estimated at $30,000 USD.

	How much was lost and how was it calculated? If there are conflicting reports, which are accurate and where does the discrepancy lie?		How much was lost and how was it calculated? If there are conflicting reports, which are accurate and where does the discrepancy lie?
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	== Total Amount Recovered ==		== Total Amount Recovered ==
	~~It is unknown how much was~~ recovered.		There do not appear to have been any funds recovered in this case.

	What funds were recovered? What funds were reimbursed for those affected users?		What funds were recovered? What funds were reimbursed for those affected users?
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	== References ==		== References ==
	[https://defisaver.com/ DeFi Saver] (Jul 24)		<references><ref name="defisaverwebsite-1807">[https://defisaver.com/ DeFi Saver] (Jul 24, 2021)</ref>

	[https://twitter.com/imTokenOfficial/status/1314126579971186688 @imTokenOfficial Twitter] (Jul 24)		<ref name="imtokenofficialtwitter-1808">[https://twitter.com/imTokenOfficial/status/1314126579971186688 @imTokenOfficial Twitter] (Jul 24, 2021)</ref>

	[https://slowmist.medium.com/slowmist-how-was-the-310-000-dai-of-defi-saver-users-stolen-91de37a4ade2 Slowmist How Was The 310 000 Dai Of Defi Saver Users Stolen] (Jul 24)		<ref name="slowmistmedium-1809">[https://slowmist.medium.com/slowmist-how-was-the-310-000-dai-of-defi-saver-users-stolen-91de37a4ade2 Slowmist How Was The 310 000 Dai Of Defi Saver Users Stolen] (Jul 24, 2021)</ref>

	[https://twitter.com/DeFiSaver/status/1274093629800361984 @DeFiSaver Twitter] (Jul 24)		<ref name="defisavertwitter-1810">[https://twitter.com/DeFiSaver/status/1274093629800361984 @DeFiSaver Twitter] (Jul 24, 2021)</ref>

	[https://twitter.com/DeFiSaver/status/1274787645093285890 @DeFiSaver Twitter] (Jul 24)		<ref name="defisavertwitter-1811">[https://twitter.com/DeFiSaver/status/1274787645093285890 @DeFiSaver Twitter] (Jul 24, 2021)</ref>

	[https://medium.com/defi-saver/disclosing-a-recently-discovered-exchange-vulnerability-fcd0b61edffe Disclosing A Recently Discovered Exchange Vulnerability] (Jul 24)		<ref name="defisavermedium-1812">[https://medium.com/defi-saver/disclosing-a-recently-discovered-exchange-vulnerability-fcd0b61edffe Disclosing A Recently Discovered Exchange Vulnerability] (Jul 24, 2021)</ref>

	[https://twitter.com/DeFiSaver/status/1277973869710594053 @DeFiSaver Twitter] (Jul 24)		<ref name="defisavertwitter-1813">[https://twitter.com/DeFiSaver/status/1277973869710594053 @DeFiSaver Twitter] (Jul 24, 2021)</ref>

	[https://etherscan.io/address/0x9523fe0d1d488cafddfb3dce28d7d177dddbc300 ExchangeRedeemer \| 0x9523fe0d1d488cafddfb3dce28d7d177dddbc300] (Jul 24)		<ref name="etherscan-1814">[https://etherscan.io/address/0x9523fe0d1d488cafddfb3dce28d7d177dddbc300 ExchangeRedeemer \| 0x9523fe0d1d488cafddfb3dce28d7d177dddbc300] (Jul 24, 2021)</ref>

	[https://etherscan.io/address/0xe05b162cd6571e825484ae95a93bfac02e64b05a DeFi Saver: Safeguard \| 0xe05b162cd6571e825484ae95a93bfac02e64b05a] (Jul 24)		<ref name="etherscan-1815">[https://etherscan.io/address/0xe05b162cd6571e825484ae95a93bfac02e64b05a DeFi Saver: Safeguard \| 0xe05b162cd6571e825484ae95a93bfac02e64b05a] (Jul 24, 2021)</ref>

	[https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/medium.com/defi-saver/disclosing-a-recently-discovered-vulnerability-d88e3b5cb67 https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/medium.com/defi-saver/disclosing-a-recently-discovered-vulnerability-d88e3b5cb67] (Oct 11)		<ref name="mastermedium-3719">[https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/medium.com/defi-saver/disclosing-a-recently-discovered-vulnerability-d88e3b5cb67 https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/medium.com/defi-saver/disclosing-a-recently-discovered-vulnerability-d88e3b5cb67] (Oct 11, 2021)</ref>

	[https://blocksecteam.medium.com/unlimited-approval-in-erc20-convenience-or-security-1c8dce421ed7 Unlimited Approval In Erc20 Convenience Or Security] (Oct 11)		<ref name="blocksecteammedium-3714">[https://blocksecteam.medium.com/unlimited-approval-in-erc20-convenience-or-security-1c8dce421ed7 Unlimited Approval In Erc20 Convenience Or Security] (Oct 11, 2021)</ref>

	[https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/www.chainnews.com/articles/790968196239.htm https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/www.chainnews.com/articles/790968196239.htm] (Oct 11)		<ref name="secos-3720">[https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/www.chainnews.com/articles/790968196239.htm https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/www.chainnews.com/articles/790968196239.htm] (Oct 11, 2021)</ref></references>

Azoundria: Created page with "{{Imported Case Study|source=https://www.quadrigainitiative.com/casestudy/defisaverexchangevulnerability.php}} DeFi SaverThere was a vulnerability in the DefiSaver smart contract. Some funds were under risk, however they were captured and returned through a whitehat hack. This is a global/international case not involving a specific country. == About DeFi Saver == "DeFi Saver is a one-stop dashboard for creating, managing and tracking your..."

2023-01-25T17:29:35Z

Created page with "{{Imported Case Study|source=https://www.quadrigainitiative.com/casestudy/defisaverexchangevulnerability.php}} thumb|DeFi SaverThere was a vulnerability in the DefiSaver smart contract. Some funds were under risk, however they were captured and returned through a whitehat hack. This is a global/international case not involving a specific country. == About DeFi Saver == "DeFi Saver is a one-stop dashboard for creating, managing and tracking your..."

New page

{{Imported Case Study|source=https://www.quadrigainitiative.com/casestudy/defisaverexchangevulnerability.php}}

[[File:Defisaver.jpg|thumb|DeFi Saver]]There was a vulnerability in the DefiSaver smart contract. Some funds were under risk, however they were captured and returned through a whitehat hack.

This is a global/international case not involving a specific country.

== About DeFi Saver ==
"DeFi Saver is a one-stop dashboard for creating, managing and tracking your DeFi positions." "Automation can manage your leverage and protect your position from liquidation based on your input, non-custodially and trustlessly."

"Earlier today a vulnerability in the DeFi Saver Exchange was disclosed to our team."

"In order to protect user funds we performed a white hack attack to move affected funds (~$30k) to a smart contract from where only original owners can withdraw."

"We will share more details about the discovered vulnerability and the steps we will take to prevent any similar issues from happening again early next week. For the time being the Exchange has been removed from the DeFi Saver app." "If you ever used the Exchange at DeFi Saver you may need to remove token approvals in order to secure your account.Warning sign"

"All funds (~$30k) affected by the vulnerability are safe and will be returned to their owners. We performed a white hat attack to move affected funds to a smart contract from where the funds can only be withdrawn by their original owner addresses."

This is a global/international case not involving a specific country.

The background of the exchange platform, service, or individuals involved, as it would have been seen or understood at the time of the events.

Include:

* Known history of when and how the service was started.
* What problems does the company or service claim to solve?
* What marketing materials were used by the firm or business?
* Audits performed, and excerpts that may have been included.
* Business registration documents shown (fake or legitimate).
* How were people recruited to participate?
* Public warnings and announcements prior to the event.

Don't Include:

* Any wording which directly states or implies that the business is/was illegitimate, or that a vulnerability existed.
* Anything that wasn't reasonably knowable at the time of the event.
There could be more than one section here. If the same platform is involved with multiple incidents, then it can be linked to a main article page.

== The Reality ==
This sections is included if a case involved deception or information that was unknown at the time. Examples include:

* When the service was actually started (if different than the "official story").
* Who actually ran a service and their own personal history.
* How the service was structured behind the scenes. (For example, there was no "trading bot".)
* Details of what audits reported and how vulnerabilities were missed during auditing.

== What Happened ==
The specific events of the loss and how it came about. What actually happened to cause the loss and some of the events leading up to it.
{| class="wikitable"
|+Key Event Timeline - DeFi Saver Exchange Vulnerability
!Date
!Event
!Description
|-
|June 19th, 2020 12:00:00 AM
|First Event
|This is an expanded description of what happened and the impact. If multiple lines are necessary, add them here.
|-
|
|
|
|-
|
|
|
|}

== Total Amount Lost ==
The total amount lost is unknown.

How much was lost and how was it calculated? If there are conflicting reports, which are accurate and where does the discrepancy lie?

== Immediate Reactions ==
How did the various parties involved (firm, platform, management, and/or affected individual(s)) deal with the events? Were services shut down? Were announcements made? Were groups formed?

== Ultimate Outcome ==
What was the end result? Was any investigation done? Were any individuals prosecuted? Was there a lawsuit? Was any tracing done?

== Total Amount Recovered ==
It is unknown how much was recovered.

What funds were recovered? What funds were reimbursed for those affected users?

== Ongoing Developments ==
What parts of this case are still remaining to be concluded?

== Prevention Policies ==
No user funds were lost.

== References ==
[https://defisaver.com/ DeFi Saver] (Jul 24)

[https://twitter.com/imTokenOfficial/status/1314126579971186688 @imTokenOfficial Twitter] (Jul 24)

[https://slowmist.medium.com/slowmist-how-was-the-310-000-dai-of-defi-saver-users-stolen-91de37a4ade2 Slowmist How Was The 310 000 Dai Of Defi Saver Users Stolen] (Jul 24)

[https://twitter.com/DeFiSaver/status/1274093629800361984 @DeFiSaver Twitter] (Jul 24)

[https://twitter.com/DeFiSaver/status/1274787645093285890 @DeFiSaver Twitter] (Jul 24)

[https://medium.com/defi-saver/disclosing-a-recently-discovered-exchange-vulnerability-fcd0b61edffe Disclosing A Recently Discovered Exchange Vulnerability] (Jul 24)

[https://twitter.com/DeFiSaver/status/1277973869710594053 @DeFiSaver Twitter] (Jul 24)

[https://etherscan.io/address/0x9523fe0d1d488cafddfb3dce28d7d177dddbc300 ExchangeRedeemer | 0x9523fe0d1d488cafddfb3dce28d7d177dddbc300] (Jul 24)

[https://etherscan.io/address/0xe05b162cd6571e825484ae95a93bfac02e64b05a DeFi Saver: Safeguard | 0xe05b162cd6571e825484ae95a93bfac02e64b05a] (Jul 24)

[https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/medium.com/defi-saver/disclosing-a-recently-discovered-vulnerability-d88e3b5cb67 https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/medium.com/defi-saver/disclosing-a-recently-discovered-vulnerability-d88e3b5cb67] (Oct 11)

[https://blocksecteam.medium.com/unlimited-approval-in-erc20-convenience-or-security-1c8dce421ed7 Unlimited Approval In Erc20 Convenience Or Security] (Oct 11)

[https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/www.chainnews.com/articles/790968196239.htm https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/www.chainnews.com/articles/790968196239.htm] (Oct 11)