National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-3739 Detail

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.

Source:  MITRE
Description Last Modified:  05/20/2016

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.3 MEDIUM
Vector: AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 1.6


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

CVSS v2.0 Severity and Metrics:

Base Score: 2.6 LOW
Vector: (AV:N/AC:H/Au:N/C:N/I:P/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 4.9


Access Vector (AV): Network
Access Complexity (AC): High
Authentication (AU): None
Confidentiality (C): None
Integrity (I): Partial
Availability (A): None
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
http://www.securityfocus.com/bid/90726
http://www.securitytracker.com/id/1035907
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.495349
https://curl.haxx.se/changes.html#7_49_0
https://curl.haxx.se/CVE-2016-3739.patch Vendor Advisory
https://curl.haxx.se/docs/adv_20160518.html Vendor Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
https://security.gentoo.org/glsa/201701-47

Technical Details

Vulnerability Type (View All)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
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:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.28.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.28.1:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.29.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.30.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.31.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.32.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.33.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.34.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.35.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.36.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.38.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.39.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.40.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.41.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.42.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.42.1:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.43.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.44.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.45.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.46.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.47.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.48.0:*:*:*:*:*:*:*

Denotes Vulnerable Software
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Change History

8 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-3739
NVD Published Date:
05/20/2016
NVD Last Modified:
10/16/2018