PT-2021-12042 · Solidity · Solidity

Published 2021-07-01 · Updated 2021-07-06 · CVE-2020-36402

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: Solidity version 0.7.5

Description: The issue is related to a stack-use-after-return problem in the smtutil::CHCSmtLib2Interface::querySolver function.

Recommendations: For Solidity version 0.7.5, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2020-36402

Affected Products

Solidity

References · 5

• 🔥 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26997 · Exploit
• https://github.com/ethereum/solidity/commit/c39a5e2b7a3fabbf687f53a2823fc087be6c1a7e · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2020-36402 · Security Note
• https://osv.dev/vulnerability/CVE-2020-36402 · Vendor Advisory
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/solidity/OSV-2020-2131.yaml · Note