CVE-2018-11239
High PUBLISHEDAn integer overflow in the _transfer function of a smart contract implementation for Hexagon (HXG), an Ethereum ERC20 token, allows attackers to...
Not yet in CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
An integer overflow in the _transfer function of a smart contract implementation for Hexagon (HXG), an Ethereum ERC20 token, allows attackers to accomplish an unauthorized increase of digital assets by providing a _to argument in conjunction with a large _value argument, as exploited in the wild in May 2018, aka the "burnOverflow" issue.
- CVE Published
- May 19, 2018
- Exploitation Reported
- May 19, 2018
- CVSS
- 7.5 High
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| n/a |
n/a
|
n/a |
Affected |
CVE References
- peckshield.com/2018/05/18/burnOverflow peckshield.com · CVE Record https://peckshield.com/2018/05/18/burnOverflow/
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CVE First | 2018-05-19 18:00 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
AV:N/AC:L/Au:N/C:N/I:P/A:N
Exploitation Status
Exploited in the wild
Recorded 2018-05-19 18:00:00 UTC · CVE
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
18:00 UTC about 8 years ago18:00 UTC · about 8 years ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
18:00 UTC about 8 years ago18:00 UTC · about 8 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC about 8 years ago00:00 UTC · about 8 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2018-11239
{
"cve_id": "CVE-2018-11239",
"title": "An integer overflow in the _transfer function of a smart contract implementat...",
"affected_vendor": "Hexagon",
"affected_product": "HXG (Ethereum ERC20 token)",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "High",
"cvss_score": 7.5,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}