CVE-2017-3737

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Summary

CVECVE-2017-3737
StatePUBLISHED
Assigneropenssl
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-12-07 16:29:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionOpenSSL 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.

Risk And Classification

Primary CVSS: v3.0 5.9 MEDIUM from [email protected]

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

Problem Types: CWE-125 | CWE-787 | Unauthenticated read/unencrypted write

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary5.9MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
2.0[email protected]Primary4.3AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

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

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None

AV:N/AC:M/Au:N/C:P/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 9.0 All All All
Application Openssl Openssl 1.0.2b All All All
Application Openssl Openssl 1.0.2c All All All
Application Openssl Openssl 1.0.2d All All All
Application Openssl Openssl 1.0.2e All All All
Application Openssl Openssl 1.0.2f All All All
Application Openssl Openssl 1.0.2g All All All
Application Openssl Openssl 1.0.2h All All All
Application Openssl Openssl 1.0.2i All All All
Application Openssl Openssl 1.0.2j All All All
Application Openssl Openssl 1.0.2k All All All
Application Openssl Openssl 1.0.2l All All All
Application Openssl Openssl 1.0.2m All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OpenSSL Software Foundation OpenSSL affected 1.0.2b-1.0.2m Not specified

References

ReferenceSourceLinkTags
www.openssl.org/news/secadv/20171207.txt af854a3a-2127-422b-91ae-364da2661108 www.openssl.org Vendor Advisory
OpenSSL CVE-2017-3737 Security Bypass Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
cert-portal.siemens.com/productcert/pdf/ssa-179516.pdf af854a3a-2127-422b-91ae-364da2661108 cert-portal.siemens.com
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
Oracle Critical Patch Update - July 2019 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
CVE-2017-3737: OpenSSL Security Bypass Vulnerability - DigitalMunition af854a3a-2127-422b-91ae-364da2661108 www.digitalmunition.me Third Party Advisory
security.FreeBSD.org/advisories/FreeBSD-SA-17:12.openssl.asc af854a3a-2127-422b-91ae-364da2661108 security.FreeBSD.org Third Party Advisory
April 2018 MySQL Vulnerabilities in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com
January 2018 MySQL vulnerabilities in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com
Debian -- Security Information -- DSA-4065-1 openssl1.0 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
Oracle Critical Patch Update - January 2018 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
OpenSSL: Multiple vulnerabilities (GLSA 201712-03) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
December 2017 OpenSSL Vulnerabilities in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
Oracle Critical Patch Update - April 2018 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
OpenSSL Overflow in rsaz_1024_mul_avx2() Lets Remote Users Obtain Potentially Sensitive Information in Certain Cases and SSL_read()/SSL_write() Error State Bug May Bypass Decryption/Encryption in Certain Application Dependent Cases - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
[R2] SecurityCenter 5.6.1 Fixes Multiple Third-party Vulnerabilities - Security Advisory | Tenable® af854a3a-2127-422b-91ae-364da2661108 www.tenable.com
Don't allow read/write after fatal error · openssl/openssl@898fb88 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com
CPU July 2018 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 591115 ABB Relion 670 series and Relion 650 series Open Secure Sockets Layer (OpenSSL) Multiple Vulnerabilities (ABBVU-PGGA-1MRG032388)
  • 591201 Siemens WinCC (TIA Portal), IPC Diagbase and Simatic Step 7 (TIA Portal) Open Secure Sockets Layer (OpenSSL) Multiple Vulnerabilities (SSA-179516)
  • 591261 Siemens MindConnect, S7-1200/1500 CPU family, ET 200SP Open Controller Open Secure Sockets Layer (OpenSSL) Multiple Vulnerabilities (ICSA-18-226-02, SSA-179516)
  • 670784 EulerOS Security Update for shim (EulerOS-SA-2021-2542)
  • 670808 EulerOS Security Update for shim (EulerOS-SA-2021-2566)
  • 710507 Gentoo Linux Open Secure Sockets Layer (OpenSSL) Multiple Vulnerabilities (GLSA 201712-03)
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