CVE & CISA-KEV Catalog

CVE-2018-17877

HIGHEPSS 74th pctl
7.5
CVSS v3
NVD

Description

A lottery smart contract implementation for Greedy 599, an Ethereum gambling game, generates a random value that is predictable via an external contract call. The developer used the extcodesize() function to prevent a malicious contract from being called, but the attacker can bypass it by writing the core code in the constructor of their exploit code. Therefore, it allows attackers to always win and get rewards.

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityNone
AvailabilityNone

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

1.64%probability of exploitation in 30 days
74thpercentile

Elevated risk: more likely to be exploited than 74% of all known CVEs.

References

Exploit1

Related Vulnerabilities

Other CWE-338 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2008-0166High7.571%-Fix
CVE-2009-2367Critical9.823%--
CVE-2024-29868Critical9.16.0%--
CVE-2024-31497Medium5.95.8%-Fix
CVE-2021-43799High8.65.4%-Fix
CVE-2008-3280Medium5.94.0%--

Common questions

How do I fix CVE-2018-17877?

No published fix for CVE-2018-17877 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

Is CVE-2018-17877 being actively exploited?

Not that we know of. CVE-2018-17877 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.6% is the estimated probability that it will be exploited in the next 30 days. That is higher than 74% of all scored CVEs.

How severe is CVE-2018-17877?

CVE-2018-17877 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.