What is CVE-2019-5096?

CVE-2019-5096 is a critical-severity vulnerability in Embedthis Goahead, classified under Use After Free. CVSS score: 9.8/10. Published 2019-12-03.

How severe is CVE-2019-5096?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2019-5096 known to be exploited?

8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Embedthis Goahead

CVE-2019-5096

An exploitable code execution vulnerability exists in the processing of multi-part/form-data requests within the base GoAhead web server application in versions v5.0.1, v.4.1.1 and v3.6.5. A specially crafted HTTP request can lead to a use-after-free condition during the processing of this request that can be used to corrupt heap structures that could lead to full code execution. The request can be unauthenticated in the form of GET or POST requests, and does not require the requested resource to exist on the server.

Vulnerability class: Use-After-Free

EPSS: 0.670 (99.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Embedthis Goahead — versions 3.6.5, 4.1.1, 5.0.1
N/a Embedthis — versions EmbedThis GoAhead Web Server v5.0.1 EmbedThis GoAhead Web Server v4.1.1 EmbedThis GoAhead Web Server v3.6.5

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

References

talos-cna@cisco.com (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2019-5096?: CVE-2019-5096 is a critical-severity vulnerability in Embedthis Goahead, classified under Use After Free. CVSS score: 9.8/10. Published 2019-12-03.
How severe is CVE-2019-5096?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2019-5096 known to be exploited?: 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.