CVE-2016-3739

CVSS V2 Low 2.6 CVSS V3 Medium 5.3

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.

Overview

CVE ID
CVE-2016-3739

Assigner
secalert@redhat.com

Vulnerability Status
Modified

Published Version
2016-05-20T14:59:05

Last Modified Date
2018-10-17T01:29:48

Weakness Enumerations

CWE	URL
CWE-20	http://cwe.mitre.org/data/definitions/20.html

CPE Configuration (Product)

CPE	Vulnerable	Operator
cpe:2.3:a:haxx:curl:7.21.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.21.1:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.21.2:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.21.3:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.21.4:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.21.5:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.21.6:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.21.7:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.22.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.23.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.23.1:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.24.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.25.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.26.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.27.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.28.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.28.1:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.29.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.30.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.31.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.32.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.33.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.34.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.35.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.36.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.38.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.39.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.40.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.41.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.42.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.42.1:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.43.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.44.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.45.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.46.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.47.0:::::::*	1	OR
cpe:2.3:a:haxx:curl:7.48.0:::::::*	1	OR

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:H/Au:N/C:N/I:P/A:N

Access Vector
NETWORK

Access Compatibility
HIGH

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
PARTIAL

Availability Impact
NONE

Base Score
2.6

Severity
LOW

Exploitability Score
4.9

Impact Score
2.9

CVSS Version 3

Version
3.0

Vector String
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack Vector
NETWORK

Attack Compatibility
HIGH

Privileges Required
NONE

User Interaction
REQUIRED

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
NONE

Base Score
5.3

Base Severity
MEDIUM

Exploitability Score
1.6

Impact Score
3.6

References

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

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2016-3739
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3739

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 18:14:29				Added to TrackCVE
2022-12-02 09:37:21	2016-05-20T14:59Z	2016-05-20T14:59:05	CVE Published Date	updated
2022-12-02 09:37:21		2018-10-17T01:29:48	CVE Modified Date	updated
2022-12-02 09:37:21		Modified	Vulnerability Status	updated