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Improper Input Validation Affecting openssl package, versions <1.1.0e-1

0.0
high

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 3.64% (92nd percentile)
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NVD
7.5 high
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Red Hat
5.9 medium

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  • Snyk ID SNYK-DEBIAN9-OPENSSL-375002
  • published 4 May 2017
  • disclosed 4 May 2017
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Introduced: 4 May 2017

CVE-2017-3733 Open this link in a new tab
CWE-20 Open this link in a new tab

How to fix?

Upgrade Debian:9 openssl to version 1.1.0e-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

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.