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CVE-2020-36402

Good to know:

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Date: June 30, 2021

Solidity 0.7.5 has a stack-use-after-return issue in smtutil::CHCSmtLib2Interface::querySolver. NOTE: c39a5e2b7a3fabbf687f53a2823fc087be6c1a7e is cited in the OSV "fixed" field but does not have a code change.

Language: C++

Severity Score

Related Resources (5)

https://github.com/google/oss-fuzz-vulns/blob/main/vulns/solidity/OSV-2020-2131.yaml
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26997
https://github.com/ethereum/solidity/commit/c39a5e2b7a3fabbf687f53a2823fc087be6c1a7e
https://nvd.nist.gov/vuln/detail/CVE-2020-36402
https://www.mend.io/vulnerability-database/CVE-2020-36402

Severity Score

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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