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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2017-3737 Detail

Description

OpenSSL 1.0.2 (starting from version 1.0.2b) introduced an "error state" mechanism. The intent was that if a fatal error occurred during a handshake then OpenSSL would move into the error state and would immediately fail if you attempted to continue the handshake. This works as designed for the explicit handshake functions (SSL_do_handshake(), SSL_accept() and SSL_connect()), however due to a bug it does not work correctly if SSL_read() or SSL_write() is called directly. In that scenario, if the handshake fails then a fatal error will be returned in the initial function call. If SSL_read()/SSL_write() is subsequently called by the application for the same SSL object then it will succeed and the data is passed without being decrypted/encrypted directly from the SSL/TLS record layer. In order to exploit this issue an application bug would have to be present that resulted in a call to SSL_read()/SSL_write() being issued after having already received a fatal error. OpenSSL version 1.0.2b-1.0.2m are affected. Fixed in OpenSSL 1.0.2n. OpenSSL 1.1.0 is not affected.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html CVE, OpenSSL Software Foundation
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html CVE, OpenSSL Software Foundation
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html CVE, OpenSSL Software Foundation
http://www.securityfocus.com/bid/102103 CVE, OpenSSL Software Foundation Third Party Advisory  VDB Entry 
http://www.securitytracker.com/id/1039978 CVE, OpenSSL Software Foundation Third Party Advisory  VDB Entry 
https://access.redhat.com/errata/RHSA-2018:0998 CVE, OpenSSL Software Foundation
https://access.redhat.com/errata/RHSA-2018:2185 CVE, OpenSSL Software Foundation
https://access.redhat.com/errata/RHSA-2018:2186 CVE, OpenSSL Software Foundation
https://access.redhat.com/errata/RHSA-2018:2187 CVE, OpenSSL Software Foundation
https://cert-portal.siemens.com/productcert/pdf/ssa-179516.pdf CVE, OpenSSL Software Foundation
https://github.com/openssl/openssl/commit/898fb884b706aaeb283de4812340bb0bde8476dc CVE, OpenSSL Software Foundation
https://security.FreeBSD.org/advisories/FreeBSD-SA-17:12.openssl.asc CVE, OpenSSL Software Foundation Third Party Advisory 
https://security.gentoo.org/glsa/201712-03 CVE, OpenSSL Software Foundation Third Party Advisory 
https://security.netapp.com/advisory/ntap-20171208-0001/ CVE, OpenSSL Software Foundation Third Party Advisory 
https://security.netapp.com/advisory/ntap-20180117-0002/ CVE, OpenSSL Software Foundation
https://security.netapp.com/advisory/ntap-20180419-0002/ CVE, OpenSSL Software Foundation
https://www.debian.org/security/2017/dsa-4065 CVE, OpenSSL Software Foundation Third Party Advisory 
https://www.digitalmunition.me/2017/12/cve-2017-3737-openssl-security-bypass-vulnerability/ CVE, OpenSSL Software Foundation Third Party Advisory 
https://www.openssl.org/news/secadv/20171207.txt CVE, OpenSSL Software Foundation Vendor Advisory 
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html CVE, OpenSSL Software Foundation
https://www.tenable.com/security/tns-2017-16 CVE, OpenSSL Software Foundation

Weakness Enumeration

CWE-ID CWE Name Source
CWE-125 Out-of-bounds Read cwe source acceptance level NIST  
CWE-787 Out-of-bounds Write cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

20 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-3737
NVD Published Date:
12/07/2017
NVD Last Modified:
04/19/2025
Source:
OpenSSL Software Foundation