vyperlang Vyper up to 0.3.10 memory corruption

Summaryinfo

A vulnerability classified as critical was found in vyperlang Vyper up to 0.3.10. The affected element is an unknown function. Executing a manipulation can lead to memory corruption. This vulnerability is tracked as CVE-2024-24560. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in vyperlang Vyper up to 0.3.10 and classified as problematic. This vulnerability affects an unknown function. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality. CVE summarizes:

Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine. When calls to external contracts are made, we write the input buffer starting at byte 28, and allocate the return buffer to start at byte 0 (overlapping with the input buffer). When checking RETURNDATASIZE for dynamic types, the size is compared only to the minimum allowed size for that type, and not to the returned value's length. As a result, malformed return data can cause the contract to mistake data from the input buffer for returndata. When the called contract returns invalid ABIv2 encoded data, the calling contract can read different invalid data (from the dirty buffer) than the called contract returned.

The weakness was disclosed 02/02/2024. The advisory is available at github.com. This vulnerability was named CVE-2024-24560 since 01/25/2024. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 02/25/2024).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• vyperlang

Name

• Vyper

Version

• 0.3.0
• 0.3.1
• 0.3.2
• 0.3.3
• 0.3.4
• 0.3.5
• 0.3.6
• 0.3.7
• 0.3.8
• 0.3.9
• 0.3.10

Website

• Product: https://github.com/vyperlang/vyper/

CPE 2.3info

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CPE 2.2info

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Entryinfo

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