CVE-2016-3739

Impact:
Moderate
Public Date:
2016-05-18
IAVA:
2016-B-0160
CWE:
CWE-345
Bugzilla:
1335430: CVE-2016-3739 curl: TLS certificate name check bypass with mbedTLS and PolarSSL

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2016-3739 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 4
Base Metrics AV:N/AC:H/Au:N/C:P/I:P/A:N
Access Vector Network
Access Complexity High
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact None

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Affected Packages State

Platform Package State
Red Hat JBoss Web Server 3.0 curl Not affected
Red Hat Enterprise Linux 7 curl Not affected
Red Hat Enterprise Linux 6 curl Not affected
Red Hat Enterprise Linux 5 curl Not affected
RHEV Manager 3 mingw-virt-viewer Not affected

Acknowledgements

Red Hat would like to thank Daniel Stenberg (curl upstream) for reporting this issue. Upstream acknowledges Moti Avrahami as the original reporter.

External References

Last Modified

CVE description copyright © 2017, The MITRE Corporation

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