Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

Go to Calendar     Go to Press Room     Go to Newsletters subscription

Search

CVE-2016-3739

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
20/05/2016
Last modified:
12/04/2025

Description

The (1) mbed_connect_step1 function in lib/vtls/mbedtls.c and (2) polarssl_connect_step1 function in lib/vtls/polarssl.c in cURL and libcurl before 7.49.0, when using SSLv3 or making a TLS connection to a URL that uses a numerical IP address, allow remote attackers to spoof servers via an arbitrary valid certificate.

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.30 MEDIUM
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): None

Base Score 3.x
5.30
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:H/Au:N/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 2.60 LOW
Vector: AV:N/AC:H/Au:N/C:N/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Authentication (Au): None
Confidentiality (C): None
Integrity (I): Physical
Availability (A): None

Base Score 2.0
2.60
Severity 2.0
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:haxx:curl:7.21.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.21.1:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.21.2:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.21.3:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.21.4:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.21.5:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.21.6:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.21.7:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.22.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.23.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.23.1:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.24.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.25.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.26.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.27.0:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools