CVE-2020-37288Vyper 0.1.0b10 before 0.2.3 Invalid Jump Destination via Return in Nested Loops

Description

Vyper from 0.1.0b10 before 0.2.3 generates incorrect code for a return statement inside a for loop in an internal function called two or more internal calls deep, producing an invalid jump destination (stack underflow). Affected contracts revert such calls unnecessarily, which in limited circumstances could enable denial of service against public contracts.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• GitHub Security Advisory (GHSA-vg88-3v92-rjx2) vendor-advisory
• VulnCheck Advisory: Vyper 0.1.0b10 before 0.2.3 Invalid Jump Destination via Return in Nested Loops third-party-advisory