CVE-2020-36402 — HIGH (7.8)

Vulnerability Description

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.

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Soliditylang	Solidity	0.7.5
Linux	Linux Kernel	-

Related Weaknesses (CWE)

CWE-787

References

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26997ExploitIssue TrackingPatch
https://github.com/ethereum/solidity/commit/c39a5e2b7a3fabbf687f53a2823fc087be6cPatchThird Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/solidity/OSV-2020-2131.Third Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26997ExploitIssue TrackingPatch
https://github.com/ethereum/solidity/commit/c39a5e2b7a3fabbf687f53a2823fc087be6cPatchThird Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/solidity/OSV-2020-2131.Third Party Advisory

FAQ

What is CVE-2020-36402?

CVE-2020-36402 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 cod...

How severe is CVE-2020-36402?

CVE-2020-36402 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-36402?

Check the references section above for vendor advisories and patch information. Affected products include: Soliditylang Solidity, Linux Linux Kernel.