// For flags

CVE-2018-1000520

 

Severity Score

7.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

ARM mbedTLS version 2.7.0 and earlier contains a Ciphersuite Allows Incorrectly Signed Certificates vulnerability in mbedtls_ssl_get_verify_result() that can result in ECDSA-signed certificates are accepted, when only RSA-signed ones should be.. This attack appear to be exploitable via Peers negotiate a TLS-ECDH-RSA-* ciphersuite. Any of the peers can then provide an ECDSA-signed certificate, when only an RSA-signed one should be accepted..

ARM mbedTLS, en versiones 2.7.0 y anteriores, contiene una vulnerabilidad de conjunto de cifrado que permite certificados firmados de forma incorrecta en mbedtls_ssl_get_verify_result(). Esto puede resultar en que se acepten certificados firmados por ECDSA, aunque solo deberían aceptarse los firmados por RSA. Este ataque parece ser explotable mediante peers que negocien un conjunto de cifrado TLS-ECDH-RSA-*. Cualquier peer puede proporcionar un certificado firmado por ECDSA, aunque solo deberían aceptarse los firmados por RSA.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-05-01 CVE Reserved
  • 2018-06-26 CVE Published
  • 2024-05-05 EPSS Updated
  • 2024-08-05 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-295: Improper Certificate Validation
CAPEC
References (1)
URL Date SRC
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Arm
Search vendor "Arm"
Mbed Tls
Search vendor "Arm" for product "Mbed Tls"
<= 2.7.0
Search vendor "Arm" for product "Mbed Tls" and version " <= 2.7.0"
-
Affected