Vulnerability Intelligence Report
CVE-2019-18801
An issue was discovered in Envoy 1.12.0. An untrusted remote client may send HTTP/2 requests that write to the heap outside of the request buffers when the upstream is HTTP/1. This may be used to corrupt nearby heap contents (leading to a query-of-death scenario) or may be used to bypass Envoy's access control mechanisms such as path based routing. An attacker can also modify requests from other users that happen to be proximal temporally and spatially.
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
EPSS Probability:2.50%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
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Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| envoyproxy | envoy | all |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
2.502%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | MITRE Corporation · N/A · USA |
| Reserved | 2019-11-07T00:00:00 |
| Published | 2019-12-13T12:20:00 |
| Last Updated | 2024-08-05T02:02:39 |
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