// For flags

CVE-2024-2466

TLS certificate check bypass with mbedTLS

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

libcurl did not check the server certificate of TLS connections done to a host specified as an IP address, when built to use mbedTLS. libcurl would wrongly avoid using the set hostname function when the specified hostname was given as an IP address, therefore completely skipping the certificate check. This affects all uses of TLS protocols (HTTPS, FTPS, IMAPS, POPS3, SMTPS, etc).

libcurl no verificó el certificado del servidor de las conexiones TLS realizadas a un host especificado como dirección IP, cuando se creó para usar mbedTLS. libcurl evitaría erróneamente el uso de la función establecer nombre de host cuando el nombre de host especificado se proporcionara como dirección IP, por lo que se saltaría por completo la verificación del certificado. Esto afecta a todos los usos de los protocolos TLS (HTTPS, FTPS, IMAPS, POPS3, SMTPS, etc).

A flaw was found in curl. When curl is built to use mbedTLS as the TLS backend, it does not check the server certificate of TLS connections done to a host specified as an IP address.

*Credits: Frank Yueh, Stefan Eissing
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
Poc
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-03-14 CVE Reserved
  • 2024-03-27 CVE Published
  • 2024-07-30 EPSS Updated
  • 2024-08-23 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-297: Improper Validation of Certificate with Host Mismatch
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Curl
Search vendor "Curl"
 Curl
Search vendor "Curl" for product "Curl"
 8.6.0
Search vendor "Curl" for product "Curl" and version "8.6.0"
en
Affected
Curl
Search vendor "Curl"
 Curl
Search vendor "Curl" for product "Curl"
 8.5.0
Search vendor "Curl" for product "Curl" and version "8.5.0"
en
Affected