CVE-2017-2784

Name: CVE-2017-2784
Creator: NVD / NIST
Published: 2017-04-20T18:59:01.593+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.39%

Last modified Jun 17, 2026

CVE-2017-2784 is a vulnerability of currently unknown severity. An exploitable free of a stack pointer vulnerability exists in the x509 certificate parsing code of ARM mbed TLS before 1.3.19, 2.x before 2.1.7, and 2.4.x before 2.4.2. A specially crafted x509 certificate, when parsed by mbed TLS library, can cause an invalid free of a stack pointer leading to a potential remote code execution. EPSS estimates a 3.39% chance of exploitation in the next 30 days.

Description

An exploitable free of a stack pointer vulnerability exists in the x509 certificate parsing code of ARM mbed TLS before 1.3.19, 2.x before 2.1.7, and 2.4.x before 2.4.2. A specially crafted x509 certificate, when parsed by mbed TLS library, can cause an invalid free of a stack pointer leading to a potential remote code execution. In order to exploit this vulnerability, an attacker can act as either a client or a server on a network to deliver malicious x509 certificates to vulnerable applications.

Metrics

EPSS Probability

3.39%

87.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

Affected Software

Vendor	Product	Versions
Trustedfirmware	Mbed Tls	<= 1.3.18
Trustedfirmware	Mbed Tls	2.0.0
Trustedfirmware	Mbed Tls	2.1.0
Trustedfirmware	Mbed Tls	2.1.1
Trustedfirmware	Mbed Tls	2.1.2
Trustedfirmware	Mbed Tls	2.1.3
Trustedfirmware	Mbed Tls	2.1.4
Trustedfirmware	Mbed Tls	2.1.5
Trustedfirmware	Mbed Tls	2.1.6
Trustedfirmware	Mbed Tls	2.4.0

References

http://www.talosintelligence.com/reports/TALOS-2017-0274/Exploit, Technical Description, Third Party Advisory, VDB Entry
https://security.gentoo.org/glsa/201706-18
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2017-01Mitigation, Vendor Advisory
http://www.talosintelligence.com/reports/TALOS-2017-0274/Exploit, Technical Description, Third Party Advisory, VDB Entry
https://security.gentoo.org/glsa/201706-18
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2017-01Mitigation, Vendor Advisory

Timeline

Published: Apr 20, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-2784?

How severe is CVE-2017-2784?

Severity scoring for CVE-2017-2784 is pending analysis. The EPSS model estimates a 3.39% probability of exploitation in the next 30 days.

How do I fix CVE-2017-2784?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-2784?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST