Description
During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected.
Published: 2017-05-04
Score: 7.5 High
EPSS: 3.1% Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

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Advisories
Source ID Title
EUVD EUVD EUVD-2017-12850 During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected.
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Hp Operations Agent
Openssl Openssl
cve-icon MITRE

Status: PUBLISHED

Assigner: openssl

Published:

Updated: 2024-09-16T16:18:03.381Z

Reserved: 2016-12-16T00:00:00.000Z

Link: CVE-2017-3733

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2017-05-04T19:29:00.430

Modified: 2025-04-20T01:37:25.860

Link: CVE-2017-3733

cve-icon Redhat

Severity : Important

Publid Date: 2017-02-16T00:00:00Z

Links: CVE-2017-3733 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses