Cryptographic Issues Affecting openssl-perl package, versions <1:1.0.1e-42.el7_1.6


Severity

Recommended
medium

Based on Oracle Linux security rating

    Threat Intelligence

    EPSS
    97.41% (100th percentile)

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  • Snyk ID SNYK-ORACLE7-OPENSSLPERL-2493541
  • published 10 Apr 2022
  • disclosed 21 May 2015

How to fix?

Upgrade Oracle:7 openssl-perl to version 1:1.0.1e-42.el7_1.6 or higher.
This issue was patched in ELSA-2015-1072.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl-perl package and not the openssl-perl package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHE_EXPORT choice, which allows man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHE_EXPORT and then rewriting a ServerHello with DHE_EXPORT replaced by DHE, aka the "Logjam" issue.

References