Vulnerability Details : CVE-2020-36402
Potential exploit
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.
Vulnerability category: Memory Corruption
Products affected by CVE-2020-36402
- cpe:2.3:a:soliditylang:solidity:0.7.5:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-36402
0.22%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 42 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-36402
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2020-36402
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-36402
-
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/solidity/OSV-2020-2131.yaml
oss-fuzz-vulns/OSV-2020-2131.yaml at main · google/oss-fuzz-vulns · GitHubThird Party Advisory
-
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26997
26997 - solidity:solc_noopt_ossfuzz: Stack-use-after-return in solidity::smtutil::CHCSmtLib2Interface::querySolver - oss-fuzzExploit;Issue Tracking;Patch;Third Party Advisory
-
https://github.com/ethereum/solidity/commit/c39a5e2b7a3fabbf687f53a2823fc087be6c1a7e
Fix accidental repetition in ir breaking changes docs. · ethereum/solidity@c39a5e2 · GitHubPatch;Third Party Advisory
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